JShell

[zhamri]

Instruction:

Paste your Jshell exercise here

[ngkerong]

Microsoft Windows [Version 10.0.18362.356] (c) 2019 Microsoft Corporation. All rights reserved.

C:\Users\user>jshell | Welcome to JShell -- Version 12.0.2 | For an introduction type: /help intro

jshell>

jshell> Ng Ke Rong | Error: | ';' expected | Ng Ke Rong; | ^

jshell> "Ng Ke Rong" $1 ==> "Ng Ke Rong"

jshell> /exit | Goodbye

C:\Users\user>jshell -v | Welcome to JShell -- Version 12.0.2 | For an introduction type: /help intro

jshell> Ng Ke Rong" | Error: | ';' expected | Ng Ke Rong" | ^

jshell> "Ng Ke Rong" $1 ==> "Ng Ke Rong" | created scratch variable $1 : String

jshell> "Universiti Utara Malaysia" $2 ==> "Universiti Utara Malaysia" | created scratch variable $2 : String

jshell> "NgKeRong#tag" $3 ==> "NgKeRong#tag" | created scratch variable $3 : String

jshell> 'Ng Ke Rong' | Error: | unclosed character literal | 'Ng Ke Rong' | ^ | Error: | unclosed character literal | 'Ng Ke Rong' | ^

jshell> /vars | String $1 = "Ng Ke Rong" | String $2 = "Universiti Utara Malaysia" | String $3 = "NgKeRong#tag"

jshell> String name = "Ng Ke Rong" name ==> "Ng Ke Rong" | created variable name : String

jshell> String $name = "SOC" $name ==> "SOC" | created variable $name : String

jshell> /vars | String $1 = "Ng Ke Rong" | String $2 = "Universiti Utara Malaysia" | String $3 = "NgKeRong#tag" | String name = "Ng Ke Rong" | String $name = "SOC"

jshell> $1==$2 $6 ==> false | created scratch variable $6 : boolean

jshell> $1+$2 $7 ==> "Ng Ke RongUniversiti Utara Malaysia" | created scratch variable $7 : String

jshell> $1<$2 | Error: | bad operand types for binary operator '<' | first type: java.lang.String | second type: java.lang.String | $1<$2 | ^---^

jshell> 7+8 $8 ==> 15 | created scratch variable $8 : int

jshell> int age = 21 age ==> 21 | created variable age : int

jshell> /vars | String $1 = "Ng Ke Rong" | String $2 = "Universiti Utara Malaysia" | String $3 = "NgKeRong#tag" | String name = "Ng Ke Rong" | String $name = "SOC" | boolean $6 = false | String $7 = "Ng Ke RongUniversiti Utara Malaysia" | int $8 = 15 | int age = 21

jshell> int price = 50.99 | Error: | incompatible types: possible lossy conversion from double to int | int price = 50.99; | ^---^

jshell> double price = 50.99 price ==> 50.99 | created variable price : double

jshell> age + price $11 ==> 71.99000000000001 | created scratch variable $11 : double

jshell> age>price $12 ==> false | created scratch variable $12 : boolean

jshell> age != price $13 ==> true | created scratch variable $13 : boolean

jshell> /vars | String $1 = "Ng Ke Rong" | String $2 = "Universiti Utara Malaysia" | String $3 = "NgKeRong#tag" | String name = "Ng Ke Rong" | String $name = "SOC" | boolean $6 = false | String $7 = "Ng Ke RongUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> /help	Type a Java language expression, statement, or declaration.	Or type one of the following commands:	/list [	-all	-start]	list the source you have typed	/edit	edit a source entry	/drop	delete a source entry	/save [-all	-history	-start]	Save snippet source to a file	/open	open a file as source input	/vars [	-all	-start]	list the declared variables and their values	/methods [	-all	-start]	list the declared methods and their signatures	/types [	-all	-start]	list the type declarations	/imports	list the imported items	/exit []	exit the jshell tool	/env [-class-path ] [-module-path ] [-add-modules ] ...	view or change the evaluation context	/reset [-class-path ] [-module-path ] [-add-modules ]...	reset the jshell tool	/reload [-restore] [-quiet] [-class-path ] [-module-path ]...	reset and replay relevant history -- current or previous (-restore)	/history [-all]	history of what you have typed	/help [	]	get information about using the jshell tool	/set editor	start	feedback	mode	prompt	truncation	format ...	set configuration information	/? [	]	get information about using the jshell tool	/!	rerun last snippet -- see /help rerun	/	rerun snippets by ID or ID range -- see /help rerun	/-	rerun n-th previous snippet -- see /help rerun
For more information type '/help' followed by the name of a
command or a subject.
For example '/help /list' or '/help intro'.
Subjects:
intro
an introduction to the jshell tool
keys
a description of readline-like input editing
id
a description of snippet IDs and how use them
shortcuts
a description of keystrokes for snippet and command completion,
information access, and automatic code generation
context
a description of the evaluation context options for /env /reload and /reset
rerun
a description of ways to re-evaluate previously entered snippets

jshell> /list

1 : "Ng Ke Rong" 2 : "Universiti Utara Malaysia" 3 : "NgKeRong#tag" 4 : String name = "Ng Ke Rong"; 5 : String $name = "SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age = 21; 10 : double price = 50.99; 11 : age + price 12 : age>price 13 : age != price

jshell> /vars | String $1 = "Ng Ke Rong" | String $2 = "Universiti Utara Malaysia" | String $3 = "NgKeRong#tag" | String name = "Ng Ke Rong" | String $name = "SOC" | boolean $6 = false | String $7 = "Ng Ke RongUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> public static void main(String[] args){ ...> System.out.println("Hello World"); ...> } | Warning: | Modifier 'static' not permitted in top-level declarations, ignored | public static void main(String[] args){ | ^-----------^ | created method main(String[])

jshell> public void main(String[] args){ ...> System.out.println("Hello World"); ...> } | modified method main(String[]) | update overwrote method main(String[])

jshell> /list

1 : "Ng Ke Rong" 2 : "Universiti Utara Malaysia" 3 : "NgKeRong#tag" 4 : String name = "Ng Ke Rong"; 5 : String $name = "SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age = 21; 10 : double price = 50.99; 11 : age + price 12 : age>price 13 : age != price 15 : public void main(String[] args){ System.out.println("Hello World"); }

jshell> /vars | String $1 = "Ng Ke Rong" | String $2 = "Universiti Utara Malaysia" | String $3 = "NgKeRong#tag" | String name = "Ng Ke Rong" | String $name = "SOC" | boolean $6 = false | String $7 = "Ng Ke RongUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> /methods | void main(String[])

jshell> /list

1 : "Ng Ke Rong" 2 : "Universiti Utara Malaysia" 3 : "NgKeRong#tag" 4 : String name = "Ng Ke Rong"; 5 : String $name = "SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age = 21; 10 : double price = 50.99; 11 : age + price 12 : age>price 13 : age != price 15 : public void main(String[] args){ System.out.println("Hello World"); }

jshell> /edit 15

jshell> /list

1 : "Ng Ke Rong" 2 : "Universiti Utara Malaysia" 3 : "NgKeRong#tag" 4 : String name = "Ng Ke Rong"; 5 : String $name = "SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age = 21; 10 : double price = 50.99; 11 : age + price 12 : age>price 13 : age != price 15 : public void main(String[] args){ System.out.println("Hello World"); }

jshell> /edit 2

jshell> /edit 15 | created method main()

jshell> /list

1 : "Ng Ke Rong" 2 : "Universiti Utara Malaysia" 3 : "NgKeRong#tag" 4 : String name = "Ng Ke Rong"; 5 : String $name = "SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age = 21; 10 : double price = 50.99; 11 : age + price 12 : age>price 13 : age != price 15 : public void main(String[] args){ System.out.println("Hello World"); } 16 : public void main(){ System.out.println("Hello Ng Ke Rong UUM"); }

[wongfangman]

Microsoft Windows [Version 10.0.18362.356] (c) 2019 Microsoft Corporation. All rights reserved.

C:\Users\USER>java -version java version "1.8.0_221" Java(TM) SE Runtime Environment (build 1.8.0_221-b11) Java HotSpot(TM) 64-Bit Server VM (build 25.221-b11, mixed mode)

C:\Users\USER>jshell | Welcome to JShell -- Version 12.0.2 | For an introduction type: /help intro

jshell> fangman | Error: | cannot find symbol | symbol: variable fangman | fangman | ^-----^

jshell> "fangman" $1 ==> "fangman"

jshell> /exit | Goodbye

C:\Users\USER>jshell -v | Welcome to JShell -- Version 12.0.2 | For an introduction type: /help intro

jshell> fangman | Error: | cannot find symbol | symbol: variable fangman | fangman | ^-----^

jshell> "fangman" $1 ==> "fangman" | created scratch variable $1 : String

jshell> "Universiti Utara Malaysia" $2 ==> "Universiti Utara Malaysia" | created scratch variable $2 : String

jshell> "fangman#tag" $3 ==> "fangman#tag" | created scratch variable $3 : String

jshell> 'fangman' | Error: | unclosed character literal | 'fangman' | ^ | Error: | unclosed character literal | 'fangman' | ^ | Error: | reached end of file while parsing | 'fangman' | ^

jshell> /vars | String $1 = "fangman" | String $2 = "Universiti Utara Malaysia" | String $3 = "fangman#tag"

jshell> String name = "wong fang man" name ==> "wong fang man" | created variable name : String

jshell> String $name = "SOC" $name ==> "SOC" | created variable $name : String

jshell> /vars | String $1 = "fangman" | String $2 = "Universiti Utara Malaysia" | String $3 = "fangman#tag" | String name = "wong fang man" | String $name = "SOC"

jshell> s1==s2 | Error: | cannot find symbol | symbol: variable s1 | s1==s2 | ^^ | Error: | cannot find symbol | symbol: variable s2 | s1==s2 | ^^

jshell> $1==$2 $6 ==> false | created scratch variable $6 : boolean

jshell> $1 + $2 $7 ==> "fangmanUniversiti Utara Malaysia" | created scratch variable $7 : String

jshell> $1<$2 | Error: | bad operand types for binary operator '<' | first type: java.lang.String | second type: java.lang.String | $1<$2 | ^---^

jshell> 7+8 $8 ==> 15 | created scratch variable $8 : int

jshell> int age = 21 age ==> 21 | created variable age : int

jshell> /vars | String $1 = "fangman" | String $2 = "Universiti Utara Malaysia" | String $3 = "fangman#tag" | String name = "wong fang man" | String $name = "SOC" | boolean $6 = false | String $7 = "fangmanUniversiti Utara Malaysia" | int $8 = 15 | int age = 21

jshell> int price = 50.99 | Error: | incompatible types: possible lossy conversion from double to int | int price = 50.99; | ^---^

jshell> double price = 50.99 price ==> 50.99 | created variable price : double

jshell> /vars | String $1 = "fangman" | String $2 = "Universiti Utara Malaysia" | String $3 = "fangman#tag" | String name = "wong fang man" | String $name = "SOC" | boolean $6 = false | String $7 = "fangmanUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99

jshell> age + price $11 ==> 71.99000000000001 | created scratch variable $11 : double

jshell> age > price $12 ==> false | created scratch variable $12 : boolean

jshell> age != price $13 ==> true | created scratch variable $13 : boolean

jshell> /vars | String $1 = "fangman" | String $2 = "Universiti Utara Malaysia" | String $3 = "fangman#tag" | String name = "wong fang man" | String $name = "SOC" | boolean $6 = false | String $7 = "fangmanUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> /help	Type a Java language expression, statement, or declaration.	Or type one of the following commands:	/list [	-all	-start]	list the source you have typed	/edit	edit a source entry	/drop	delete a source entry	/save [-all	-history	-start]	Save snippet source to a file	/open	open a file as source input	/vars [	-all	-start]	list the declared variables and their values	/methods [	-all	-start]	list the declared methods and their signatures	/types [	-all	-start]	list the type declarations	/imports	list the imported items	/exit []	exit the jshell tool	/env [-class-path ] [-module-path ] [-add-modules ] ...	view or change the evaluation context	/reset [-class-path ] [-module-path ] [-add-modules ]...	reset the jshell tool	/reload [-restore] [-quiet] [-class-path ] [-module-path ]...	reset and replay relevant history -- current or previous (-restore)	/history [-all]	history of what you have typed	/help [	]	get information about using the jshell tool	/set editor	start	feedback	mode	prompt	truncation	format ...	set configuration information	/? [	]	get information about using the jshell tool	/!	rerun last snippet -- see /help rerun	/	rerun snippets by ID or ID range -- see /help rerun	/-	rerun n-th previous snippet -- see /help rerun
For more information type '/help' followed by the name of a
command or a subject.
For example '/help /list' or '/help intro'.
Subjects:
intro
an introduction to the jshell tool
keys
a description of readline-like input editing
id
a description of snippet IDs and how use them
shortcuts
a description of keystrokes for snippet and command completion,
information access, and automatic code generation
context
a description of the evaluation context options for /env /reload and /reset
rerun
a description of ways to re-evaluate previously entered snippets

jshell> /list

1 : "fangman" 2 : "Universiti Utara Malaysia" 3 : "fangman#tag" 4 : String name = "wong fang man"; 5 : String $name = "SOC"; 6 : $1==$2 7 : $1 + $2 8 : 7+8 9 : int age = 21; 10 : double price = 50.99; 11 : age + price 12 : age > price 13 : age != price

jshell> /vars | String $1 = "fangman" | String $2 = "Universiti Utara Malaysia" | String $3 = "fangman#tag" | String name = "wong fang man" | String $name = "SOC" | boolean $6 = false | String $7 = "fangmanUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> public static void main(String[]args){ ...> System.out.println("Hello World"); ...> } | Warning: | Modifier 'static' not permitted in top-level declarations, ignored | public static void main(String[]args){ | ^-----------^ | created method main(String[])

jshell> public void main(){ ...> System.out.println("Hello World"); ...> } | created method main()

jshell> /list

1 : "fangman" 2 : "Universiti Utara Malaysia" 3 : "fangman#tag" 4 : String name = "wong fang man"; 5 : String $name = "SOC"; 6 : $1==$2 7 : $1 + $2 8 : 7+8 9 : int age = 21; 10 : double price = 50.99; 11 : age + price 12 : age > price 13 : age != price 14 : public static void main(String[]args){ System.out.println("Hello World"); } 15 : public void main(){ System.out.println("Hello World"); }

jshell> /vars | String $1 = "fangman" | String $2 = "Universiti Utara Malaysia" | String $3 = "fangman#tag" | String name = "wong fang man" | String $name = "SOC" | boolean $6 = false | String $7 = "fangmanUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> /method | void main(String[]) | void main()

jshell> /list

1 : "fangman" 2 : "Universiti Utara Malaysia" 3 : "fangman#tag" 4 : String name = "wong fang man"; 5 : String $name = "SOC"; 6 : $1==$2 7 : $1 + $2 8 : 7+8 9 : int age = 21; 10 : double price = 50.99; 11 : age + price 12 : age > price 13 : age != price 14 : public static void main(String[]args){ System.out.println("Hello World"); } 15 : public void main(){ System.out.println("Hello World"); }

jshell> /edit 15 | modified method main() | update overwrote method main()

jshell> /list

1 : "fangman" 2 : "Universiti Utara Malaysia" 3 : "fangman#tag" 4 : String name = "wong fang man"; 5 : String $name = "SOC"; 6 : $1==$2 7 : $1 + $2 8 : 7+8 9 : int age = 21; 10 : double price = 50.99; 11 : age + price 12 : age > price 13 : age != price 14 : public static void main(String[]args){ System.out.println("Hello World"); } 16 : public void main(){ System.out.println("Hello fangman uum"); }

jshell> /edit 2

jshell> /list

1 : "fangman" 2 : "Universiti Utara Malaysia" 3 : "fangman#tag" 4 : String name = "wong fang man"; 5 : String $name = "SOC"; 6 : $1==$2 7 : $1 + $2 8 : 7+8 9 : int age = 21; 10 : double price = 50.99; 11 : age + price 12 : age > price 13 : age != price 14 : public static void main(String[]args){ System.out.println("Hello World"); } 16 : public void main(){ System.out.println("Hello fangman uum"); }

[ikmah99]

| String $1 = "ahmad" | String $2 = "universiti utara malaysia" | String name = "ahmad" | String $name = "SOC"

jshell> $1 $1 ==> "ahmad" | value of $1 : String

jshell> $1 + $2 $6 ==> "ahmaduniversiti utara malaysia" | created scratch variable $6 : String

jshell> int age = 20 age ==> 20 | created variable age : int

jshell> /vars | String $1 = "ahmad" | String $2 = "universiti utara malaysia" | String name = "ahmad" | String $name = "SOC" | String $6 = "ahmaduniversiti utara malaysia" | int age = 20

jshell> 7+8 $8 ==> 15 | created scratch variable $8 : int

jshell> /vars | String $1 = "ahmad" | String $2 = "universiti utara malaysia" | String name = "ahmad" | String $name = "SOC" | String $6 = "ahmaduniversiti utara malaysia" | int age = 20 | int $8 = 15

jshell> int price = 50.99 | Error: | incompatible types: possible lossy conversion from double to int | int price = 50.99; | ^---^

jshell> age + price | Error: | cannot find symbol | symbol: variable price | age + price | ^---^

jshell> double price = 50.99 price ==> 50.99 | created variable price : double

jshell> age + price $10 ==> 70.99000000000001 | created scratch variable $10 : double

jshell> age>price $11 ==> false | created scratch variable $11 : boolean

jshell> age !=price $12 ==> true | created scratch variable $12 : boolean

jshell> /vars | String $1 = "ahmad" | String $2 = "universiti utara malaysia" | String name = "ahmad" | String $name = "SOC" | String $6 = "ahmaduniversiti utara malaysia" | int age = 20 | int $8 = 15 | double price = 50.99 | double $10 = 70.99000000000001 | boolean $11 = false | boolean $12 = true

jshell> /help | Type a Java language expression, statement, or declaration. | Or type one of the following commands: | /list [|-all|-start] | list the source you have typed | /edit | edit a source entry | /drop | delete a source entry | /save [-all|-history|-start] | Save snippet source to a file | /open | open a file as source input | /vars [|-all|-start] | list the declared variables and their values | /methods [|-all|-start] | list the declared methods and their signatures | /types [|-all|-start] | list the type declarations | /imports | list the imported items | /exit [] | exit the jshell tool | /env [-class-path ] [-module-path ] [-add-modules ] ... | view or change the evaluation context | /reset [-class-path ] [-module-path ] [-add-modules ]...

reset the jshell tool	/reload [-restore] [-quiet] [-class-path ] [-module-path ]...	reset and replay relevant history -- current or previous (-restore)	/history [-all]	history of what you have typed	/help [	]	get information about using the jshell tool	/set editor	start	feedback	mode	prompt	truncation	format ...	set configuration information	/? [	]	get information about using the jshell tool	/!	rerun last snippet -- see /help rerun	/	rerun snippets by ID or ID range -- see /help rerun	/-	rerun n-th previous snippet -- see /help rerun
For more information type '/help' followed by the name of a
command or a subject.
For example '/help /list' or '/help intro'.
Subjects:
intro
an introduction to the jshell tool
keys
a description of readline-like input editing
id
a description of snippet IDs and how use them
shortcuts
a description of keystrokes for snippet and command completion,
information access, and automatic code generation
context
a description of the evaluation context options for /env /reload and /re

set | rerun | a description of ways to re-evaluate previously entered snippets

jshell> /list

1 : "ahmad" 2 : "universiti utara malaysia" 3 : String name = "ahmad"; 4 : String $name = "SOC"; 5 : $1 6 : $1 + $2 7 : int age = 20; 8 : 7+8 9 : double price = 50.99; 10 : age + price 11 : age>price 12 : age !=price

jshell> /vars | String $1 = "ahmad" | String $2 = "universiti utara malaysia" | String name = "ahmad" | String $name = "SOC" | String $6 = "ahmaduniversiti utara malaysia" | int age = 20 | int $8 = 15 | double price = 50.99 | double $10 = 70.99000000000001 | boolean $11 = false | boolean $12 = true

jshell> public static void main(String[] args){ ...> system.out.println("Hello World"); ...> } | Error: | package system does not exist | system.out.println("Hello World"); | ^--------^ | Warning: | Modifier 'static' not permitted in top-level declarations, ignored | public static void main(String[] args){ | ^-----------^

jshell> public void main(String[] args){ ...> system.out.printiln(Hello World); ...> } | Error: | ')' expected | system.out.printiln(Hello World); | ^ | Error: | not a statement | system.out.printiln(Hello World); | ^---^ | Error: | ';' expected | system.out.printiln(Hello World); | ^

jshell> public void main(String[] args){ ...> system.out.println("Hello World"); ...> } | Error: | package system does not exist | system.out.println("Hello World"); | ^--------^

jshell> public void main(String[] args){ ...> System.out.println("Hello World"); ...> } | created method main(String[])

jshell> /vars | String $1 = "ahmad" | String $2 = "universiti utara malaysia" | String name = "ahmad" | String $name = "SOC" | String $6 = "ahmaduniversiti utara malaysia" | int age = 20 | int $8 = 15 | double price = 50.99 | double $10 = 70.99000000000001 | boolean $11 = false | boolean $12 = true

jshell> /list

1 : "ahmad" 2 : "universiti utara malaysia" 3 : String name = "ahmad"; 4 : String $name = "SOC"; 5 : $1 6 : $1 + $2 7 : int age = 20; 8 : 7+8 9 : double price = 50.99; 10 : age + price 11 : age>price 12 : age !=price 13 : public void main(String[] args){ System.out.println("Hello World"); }

jshell> public static void main(String[] args){ ...> System.out.println("Hello World"); ...> } | Warning: | Modifier 'static' not permitted in top-level declarations, ignored | public static void main(String[] args){ | ^-----------^ | modified method main(String[]) | update overwrote method main(String[])

jshell> /list

1 : "ahmad" 2 : "universiti utara malaysia" 3 : String name = "ahmad"; 4 : String $name = "SOC"; 5 : $1 6 : $1 + $2 7 : int age = 20; 8 : 7+8 9 : double price = 50.99; 10 : age + price 11 : age>price 12 : age !=price 14 : public static void main(String[] args){ System.out.println("Hello World"); }

jshell> /edit 14

jshell> /edit 2 $15 ==> "universiti utara malaysia Uum" | created scratch variable $15 : String

jshell> /list

1 : "ahmad" 2 : "universiti utara malaysia" 3 : String name = "ahmad"; 4 : String $name = "SOC"; 5 : $1 6 : $1 + $2 7 : int age = 20; 8 : 7+8 9 : double price = 50.99; 10 : age + price 11 : age>price 12 : age !=price 14 : public static void main(String[] args){ System.out.println("Hello World"); } 15 : "universiti utara malaysia Uum";

jshell>

[SirFarr]

Microsoft Windows [Version 10.0.18362.239] (c) 2019 Microsoft Corporation. All rights reserved.

C:\Users\Farha>java -version java version "13" 2019-09-17 Java(TM) SE Runtime Environment (build 13+33) Java HotSpot(TM) 64-Bit Server VM (build 13+33, mixed mode, sharing)

C:\Users\Farha>jshell | Welcome to JShell -- Version 13 | For an introduction type: /help intro

jshell> Farha | Error: | cannot find symbol | symbol: variable Farha | Farha | ^---^

jshell> "Farha" $1 ==> "Farha"

jshell> /exit | Goodbye

C:\Users\Farha>jshell | Welcome to JShell -- Version 13 | For an introduction type: /help intro

jshell> "Farha" $1 ==> "Farha"

jshell> jshell -v | Error: | cannot find symbol | symbol: variable jshell | jshell -v | ^----^ | Error: | cannot find symbol | symbol: variable v | jshell -v | ^

jshell> /exit | Goodbye

C:\Users\Farha>jshell -v | Welcome to JShell -- Version 13 | For an introduction type: /help intro

jshell> "Farha" $1 ==> "Farha" | created scratch variable $1 : String

jshell> /vars | String $1 = "Farha"

jshell> "3verything" $2 ==> "3verything" | created scratch variable $2 : String

jshell> "Universiti Utara Malaysia" $3 ==> "Universiti Utara Malaysia" | created scratch variable $3 : String

jshell> String name = "Farha" name ==> "Farha" | created variable name : String

jshell> /vars | String $1 = "Farha" | String $2 = "3verything" | String $3 = "Universiti Utara Malaysia" | String name = "Farha"

jshell> String $name = "Arif Farhan" $name ==> "Arif Farhan" | created variable $name : String

jshell> /vars | String $1 = "Farha" | String $2 = "3verything" | String $3 = "Universiti Utara Malaysia" | String name = "Farha" | String $name = "Arif Farhan"

jshell> $1==$2 $6 ==> false | created scratch variable $6 : boolean

jshell> $1 + $2 $7 ==> "Farha3verything" | created scratch variable $7 : String

jshell> /vars | String $1 = "Farha" | String $2 = "3verything" | String $3 = "Universiti Utara Malaysia" | String name = "Farha" | String $name = "Arif Farhan" | boolean $6 = false | String $7 = "Farha3verything"

jshell> $2-$3 | Error: | bad operand types for binary operator '-' | first type: java.lang.String | second type: java.lang.String | $2-$3 | ^---^

jshell> /vars | String $1 = "Farha" | String $2 = "3verything" | String $3 = "Universiti Utara Malaysia" | String name = "Farha" | String $name = "Arif Farhan" | boolean $6 = false | String $7 = "Farha3verything"

jshell> 69 + 96 $8 ==> 165 | created scratch variable $8 : int

jshell> int age = 20 age ==> 20 | created variable age : int

jshell> /vars | String $1 = "Farha" | String $2 = "3verything" | String $3 = "Universiti Utara Malaysia" | String name = "Farha" | String $name = "Arif Farhan" | boolean $6 = false | String $7 = "Farha3verything" | int $8 = 165 | int age = 20

jshell> double price = 99.99 price ==> 99.99 | created variable price : double

jshell> age + price $11 ==> 119.99 | created scratch variable $11 : double

jshell> /vars | String $1 = "Farha" | String $2 = "3verything" | String $3 = "Universiti Utara Malaysia" | String name = "Farha" | String $name = "Arif Farhan" | boolean $6 = false | String $7 = "Farha3verything" | int $8 = 165 | int age = 20 | double price = 99.99 | double $11 = 119.99

/vars

jshell> age != price $12 ==> true | created scratch variable $12 : boolean

jshell> /vars | String $1 = "Farha" | String $2 = "3verything" | String $3 = "Universiti Utara Malaysia" | String name = "Farha" | String $name = "Arif Farhan" | boolean $6 = false | String $7 = "Farha3verything" | int $8 = 165 | int age = 20 | double price = 99.99 | double $11 = 119.99 | boolean $12 = true

jshell> age == price $13 ==> false | created scratch variable $13 : boolean

jshell> /vars | String $1 = "Farha" | String $2 = "3verything" | String $3 = "Universiti Utara Malaysia" | String name = "Farha" | String $name = "Arif Farhan" | boolean $6 = false | String $7 = "Farha3verything" | int $8 = 165 | int age = 20 | double price = 99.99 | double $11 = 119.99 | boolean $12 = true | boolean $13 = false

jshell> /help	Type a Java language expression, statement, or declaration.	Or type one of the following commands:	/list [	-all	-start]	list the source you have typed	/edit	edit a source entry	/drop	delete a source entry	/save [-all	-history	-start]	Save snippet source to a file	/open	open a file as source input	/vars [	-all	-start]	list the declared variables and their values	/methods [	-all	-start]	list the declared methods and their signatures	/types [	-all	-start]	list the type declarations	/imports	list the imported items	/exit []	exit the jshell tool	/env [-class-path ] [-module-path ] [-add-modules ] ...	view or change the evaluation context	/reset [-class-path ] [-module-path ] [-add-modules ]...	reset the jshell tool	/reload [-restore] [-quiet] [-class-path ] [-module-path ]...	reset and replay relevant history -- current or previous (-restore)	/history [-all]	history of what you have typed	/help [	]	get information about using the jshell tool	/set editor	start	feedback	mode	prompt	truncation	format ...	set configuration information	/? [	]	get information about using the jshell tool	/!	rerun last snippet -- see /help rerun	/	rerun snippets by ID or ID range -- see /help rerun	/-	rerun n-th previous snippet -- see /help rerun
For more information type '/help' followed by the name of a
command or a subject.
For example '/help /list' or '/help intro'.
Subjects:
intro
an introduction to the jshell tool
keys
a description of readline-like input editing
id
a description of snippet IDs and how use them
shortcuts
a description of keystrokes for snippet and command completion,
information access, and automatic code generation
context
a description of the evaluation context options for /env /reload and /reset
rerun
a description of ways to re-evaluate previously entered snippets

jshell> /list

1 : "Farha" 2 : "3verything" 3 : "Universiti Utara Malaysia" 4 : String name = "Farha"; 5 : String $name = "Arif Farhan"; 6 : $1==$2 7 : $1 + $2 8 : 69 + 96 9 : int age = 20; 10 : double price = 99.99; 11 : age + price 12 : age != price 13 : age == price

jshell> /vars | String $1 = "Farha" | String $2 = "3verything" | String $3 = "Universiti Utara Malaysia" | String name = "Farha" | String $name = "Arif Farhan" | boolean $6 = false | String $7 = "Farha3verything" | int $8 = 165 | int age = 20 | double price = 99.99 | double $11 = 119.99 | boolean $12 = true | boolean $13 = false

jshell> /vars | String $1 = "Farha" | String $2 = "3verything" | String $3 = "Universiti Utara Malaysia" | String name = "Farha" | String $name = "Arif Farhan" | boolean $6 = false | String $7 = "Farha3verything" | int $8 = 165 | int age = 20 | double price = 99.99 | double $11 = 119.99 | boolean $12 = true | boolean $13 = false

jshell> public void main(){ ...> System.out.println("Hello World"); ...> } | created method main()

jshell> public static void main(String[] args){ ...> System.out.println("Hello World"); ...> } | Warning: | Modifier 'static' not permitted in top-level declarations, ignored | public static void main(String[] args){ | ^-----------^ | created method main(String[])

jshell> /list

1 : "Farha" 2 : "3verything" 3 : "Universiti Utara Malaysia" 4 : String name = "Farha"; 5 : String $name = "Arif Farhan"; 6 : $1==$2 7 : $1 + $2 8 : 69 + 96 9 : int age = 20; 10 : double price = 99.99; 11 : age + price 12 : age != price 13 : age == price 14 : public void main(){ System.out.println("Hello World"); } 15 : public static void main(String[] args){ System.out.println("Hello World"); }

jshell> /vars | String $1 = "Farha" | String $2 = "3verything" | String $3 = "Universiti Utara Malaysia" | String name = "Farha" | String $name = "Arif Farhan" | boolean $6 = false | String $7 = "Farha3verything" | int $8 = 165 | int age = 20 | double price = 99.99 | double $11 = 119.99 | boolean $12 = true | boolean $13 = false

jshell> /method | void main() | void main(String[])

jshell> /list

1 : "Farha" 2 : "3verything" 3 : "Universiti Utara Malaysia" 4 : String name = "Farha"; 5 : String $name = "Arif Farhan"; 6 : $1==$2 7 : $1 + $2 8 : 69 + 96 9 : int age = 20; 10 : double price = 99.99; 11 : age + price 12 : age != price 13 : age == price 14 : public void main(){ System.out.println("Hello World"); } 15 : public static void main(String[] args){ System.out.println("Hello World"); }

jshell> /edit 14 | modified method main() | update overwrote method main()

jshell> /list

1 : "Farha" 2 : "3verything" 3 : "Universiti Utara Malaysia" 4 : String name = "Farha"; 5 : String $name = "Arif Farhan"; 6 : $1==$2 7 : $1 + $2 8 : 69 + 96 9 : int age = 20; 10 : double price = 99.99; 11 : age + price 12 : age != price 13 : age == price 15 : public static void main(String[] args){ System.out.println("Hello World"); } 16 : public void main(){ System.out.println("Hello World DIO"); }

jshell> /edit 2

jshell> /list

1 : "Farha" 2 : "3verything" 3 : "Universiti Utara Malaysia" 4 : String name = "Farha"; 5 : String $name = "Arif Farhan"; 6 : $1==$2 7 : $1 + $2 8 : 69 + 96 9 : int age = 20; 10 : double price = 99.99; 11 : age + price 12 : age != price 13 : age == price 15 : public static void main(String[] args){ System.out.println("Hello World"); } 16 : public void main(){ System.out.println("Hello World DIO"); }

[FaiezRoslan]

Microsoft Windows [Version 10.0.18362.356] (c) 2019 Microsoft Corporation. All rights reserved.

C:\Users\Faiz>java -version java version "13" 2019-09-17 Java(TM) SE Runtime Environment (build 13+33) Java HotSpot(TM) 64-Bit Server VM (build 13+33, mixed mode, sharing)

C:\Users\Faiz>jshell | Welcome to JShell -- Version 13 | For an introduction type: /help intro

jshell> /vars

jshell> "faiz" $1 ==> "faiz"

jshell> "university" $2 ==> "university"

jshell> /vars | String $1 = "faiz" | String $2 = "university"

jshell> int $age=12 $age ==> 12

jshell> int $age=23 $age ==> 23

jshell> /help	Type a Java language expression, statement, or declaration.	Or type one of the following commands:	/list [	-all	-start]	list the source you have typed	/edit	edit a source entry	/drop	delete a source entry	/save [-all	-history	-start]	Save snippet source to a file	/open	open a file as source input	/vars [	-all	-start]	list the declared variables and their values	/methods [	-all	-start]	list the declared methods and their signatures	/types [	-all	-start]	list the type declarations	/imports	list the imported items	/exit []	exit the jshell tool	/env [-class-path ] [-module-path ] [-add-modules ] ...	view or change the evaluation context	/reset [-class-path ] [-module-path ] [-add-modules ]...	reset the jshell tool	/reload [-restore] [-quiet] [-class-path ] [-module-path ]...	reset and replay relevant history -- current or previous (-restore)	/history [-all]	history of what you have typed	/help [	]	get information about using the jshell tool	/set editor	start	feedback	mode	prompt	truncation	format ...	set configuration information	/? [	]	get information about using the jshell tool	/!	rerun last snippet -- see /help rerun	/	rerun snippets by ID or ID range -- see /help rerun	/-	rerun n-th previous snippet -- see /help rerun
For more information type '/help' followed by the name of a
command or a subject.
For example '/help /list' or '/help intro'.
Subjects:
intro
an introduction to the jshell tool
keys
a description of readline-like input editing
id
a description of snippet IDs and how use them
shortcuts
a description of keystrokes for snippet and command completion,
information access, and automatic code generation
context
a description of the evaluation context options for /env /reload and /reset
rerun
a description of ways to re-evaluate previously entered snippets

jshell> /list

1 : "faiz" 2 : "university" 4 : int $age=23;

jshell> /vars | String $1 = "faiz" | String $2 = "university" | int $age = 23

jshell> public.void.main{ ...> jshell> /vars ...> ...> jshell> "faiz" ...> $1 ==> "faiz" ...> ...> jshell> "university" ...> $2 ==> "university" ...> ...> jshell> /vars ...> | String $1 = "faiz" ...> | String $2 = "university" ...> ...> jshell> int $age=12 ...> $age ==> 12 ...> ...> jshell> int $age=23 ...> $age ==> 23 ...>

[anisnabilah]

Microsoft Windows [Version 10.0.17763.737] (c) 2018 Microsoft Corporation. All rights reserved.

C:\Users\anisn> C:\Users\anisn>java -version java version "13" 2019-09-17 Java(TM) SE Runtime Environment (build 13+33) Java HotSpot(TM) 64-Bit Server VM (build 13+33, mixed mode, sharing)

C:\Users\anisn>jshell> The syntax of the command is incorrect.

C:\Users\anisn>jshell | Welcome to JShell -- Version 13 | For an introduction type: /help intro

jshell> anis | Error: | cannot find symbol | symbol: variable anis | anis | ^--^

jshell> "anis" $1 ==> "anis"

jshell> /exit | Goodbye

C:\Users\anisn>jshell -v | Welcome to JShell -- Version 13 | For an introduction type: /help intro

jshell> "anis" $1 ==> "anis" | created scratch variable $1 : String

jshell> /vars | String $1 = "anis"

jshell> String name = "anis nabilah" name ==> "anis nabilah" | created variable name : String

jshell> String $name = "SOC" $name ==> "SOC" | created variable $name : String

jshell>

jshell> /vars | String $1 = "anis" | String name = "anis nabilah" | String $name = "SOC"

jshell> $1==$2 | Error: | cannot find symbol | symbol: variable $2 | $1==$2 | ^^

jshell> "universiti utara malaysia" $4 ==> "universiti utara malaysia" | created scratch variable $4 : String

jshell> $1==$4 $5 ==> false | created scratch variable $5 : boolean

jshell> $1 + $4 $6 ==> "anisuniversiti utara malaysia" | created scratch variable $6 : String

jshell> $<$4 | Error: | cannot find symbol | symbol: variable $ | $<$4 | ^

jshell> $1<$4 | Error: | bad operand types for binary operator '<' | first type: java.lang.String | second type: java.lang.String | $1<$4 | ^---^

jshell> 7+8 $7 ==> 15 | created scratch variable $7 : int

jshell> int age = 21 age ==> 21 | created variable age : int

jshell> /vars | String $1 = "anis" | String name = "anis nabilah" | String $name = "SOC" | String $4 = "universiti utara malaysia" | boolean $5 = false | String $6 = "anisuniversiti utara malaysia" | int $7 = 15 | int age = 21

jshell> int price = 50.99 | Error: | incompatible types: possible lossy conversion from double to int | int price = 50.99; | ^---^

jshell> double price = 50.99 price ==> 50.99 | created variable price : double

jshell>

jshell> /vars | String $1 = "anis" | String name = "anis nabilah" | String $name = "SOC" | String $4 = "universiti utara malaysia" | boolean $5 = false | String $6 = "anisuniversiti utara malaysia" | int $7 = 15 | int age = 21 | double price = 50.99

jshell> age + price $10 ==> 71.99000000000001 | created scratch variable $10 : double

jshell> age > price $11 ==> false | created scratch variable $11 : boolean

jshell> /vars | String $1 = "anis" | String name = "anis nabilah" | String $name = "SOC" | String $4 = "universiti utara malaysia" | boolean $5 = false | String $6 = "anisuniversiti utara malaysia" | int $7 = 15 | int age = 21 | double price = 50.99 | double $10 = 71.99000000000001 | boolean $11 = false

jshell>

jshell> age != price $12 ==> true | created scratch variable $12 : boolean

jshell>

jshell> /vars | String $1 = "anis" | String name = "anis nabilah" | String $name = "SOC" | String $4 = "universiti utara malaysia" | boolean $5 = false | String $6 = "anisuniversiti utara malaysia" | int $7 = 15 | int age = 21 | double price = 50.99 | double $10 = 71.99000000000001 | boolean $11 = false | boolean $12 = true

jshell>

jshell>

jshell> /help	Type a Java language expression, statement, or declaration.	Or type one of the following commands:	/list [	-all	-start]	list the source you have typed	/edit	edit a source entry	/drop	delete a source entry	/save [-all	-history	-start]	Save snippet source to a file	/open	open a file as source input	/vars [	-all	-start]	list the declared variables and their values	/methods [	-all	-start]	list the declared methods and their signatures	/types [	-all	-start]	list the type declarations	/imports	list the imported items	/exit []	exit the jshell tool	/env [-class-path ] [-module-path ] [-add-modules ] ...	view or change the evaluation context	/reset [-class-path ] [-module-path ] [-add-modules ]...	reset the jshell tool	/reload [-restore] [-quiet] [-class-path ] [-module-path ]...	reset and replay relevant history -- current or previous (-restore)	/history [-all]	history of what you have typed	/help [	]	get information about using the jshell tool	/set editor	start	feedback	mode	prompt	truncation	format ...	set configuration information	/? [	]	get information about using the jshell tool	/!	rerun last snippet -- see /help rerun	/	rerun snippets by ID or ID range -- see /help rerun	/-	rerun n-th previous snippet -- see /help rerun
For more information type '/help' followed by the name of a
command or a subject.
For example '/help /list' or '/help intro'.
Subjects:
intro
an introduction to the jshell tool
keys
a description of readline-like input editing
id
a description of snippet IDs and how use them
shortcuts
a description of keystrokes for snippet and command completion,
information access, and automatic code generation
context
a description of the evaluation context options for /env /reload and /reset
rerun
a description of ways to re-evaluate previously entered snippets

jshell>

jshell> /list

1 : "anis" 2 : String name = "anis nabilah"; 3 : String $name = "SOC"; 4 : "universiti utara malaysia" 5 : $1==$4 6 : $1 + $4 7 : 7+8 8 : int age = 21; 9 : double price = 50.99; 10 : age + price 11 : age > price 12 : age != price

jshell>

jshell> /vars | String $1 = "anis" | String name = "anis nabilah" | String $name = "SOC" | String $4 = "universiti utara malaysia" | boolean $5 = false | String $6 = "anisuniversiti utara malaysia" | int $7 = 15 | int age = 21 | double price = 50.99 | double $10 = 71.99000000000001 | boolean $11 = false | boolean $12 = true

jshell> public static void main(String[] args){ ...> System.out.printIn(Hello World"); | Error: | ')' expected | System.out.printIn(Hello World"); | ^ | Error: | unclosed string literal | System.out.printIn(Hello World"); | ^ | Error: | not a statement | System.out.printIn(Hello World"); | ^---^ | Error: | reached end of file while parsing | System.out.printIn(Hello World"); | ^

jshell>

jshell> public void main(){ ...> System.out.printIn("Hello World"); ...> } | Error: | cannot find symbol | symbol: method printIn(java.lang.String) | System.out.printIn("Hello World"); | ^----------------^

jshell> /vars | String $1 = "anis" | String name = "anis nabilah" | String $name = "SOC" | String $4 = "universiti utara malaysia" | boolean $5 = false | String $6 = "anisuniversiti utara malaysia" | int $7 = 15 | int age = 21 | double price = 50.99 | double $10 = 71.99000000000001 | boolean $11 = false | boolean $12 = true

jshell> /list

1 : "anis" 2 : String name = "anis nabilah"; 3 : String $name = "SOC"; 4 : "universiti utara malaysia" 5 : $1==$4 6 : $1 + $4 7 : 7+8 8 : int age = 21; 9 : double price = 50.99; 10 : age + price 11 : age > price 12 : age != price

jshell> public static void main(String[] args){ ...> System.out.printIn("Hello World"); ...> } | Error: | cannot find symbol | symbol: method printIn(java.lang.String) | System.out.printIn("Hello World"); | ^----------------^ | Warning: | Modifier 'static' not permitted in top-level declarations, ignored | public static void main(String[] args){ | ^-----------^

jshell>

jshell> /help	Type a Java language expression, statement, or declaration.	Or type one of the following commands:	/list [	-all	-start]	list the source you have typed	/edit	edit a source entry	/drop	delete a source entry	/save [-all	-history	-start]	Save snippet source to a file	/open	open a file as source input	/vars [	-all	-start]	list the declared variables and their values	/methods [	-all	-start]	list the declared methods and their signatures	/types [	-all	-start]	list the type declarations	/imports	list the imported items	/exit []	exit the jshell tool	/env [-class-path ] [-module-path ] [-add-modules ] ...	view or change the evaluation context	/reset [-class-path ] [-module-path ] [-add-modules ]...	reset the jshell tool	/reload [-restore] [-quiet] [-class-path ] [-module-path ]...	reset and replay relevant history -- current or previous (-restore)	/history [-all]	history of what you have typed	/help [	]	get information about using the jshell tool	/set editor	start	feedback	mode	prompt	truncation	format ...	set configuration information	/? [	]	get information about using the jshell tool	/!	rerun last snippet -- see /help rerun	/	rerun snippets by ID or ID range -- see /help rerun	/-	rerun n-th previous snippet -- see /help rerun
For more information type '/help' followed by the name of a
command or a subject.
For example '/help /list' or '/help intro'.
Subjects:
intro
an introduction to the jshell tool
keys
a description of readline-like input editing
id
a description of snippet IDs and how use them
shortcuts
a description of keystrokes for snippet and command completion,
information access, and automatic code generation
context
a description of the evaluation context options for /env /reload and /reset
rerun
a description of ways to re-evaluate previously entered snippets

jshell> /methods

jshell> /methods

jshell> /edit

jshell> jj NKJKFJOOPPDJCKF/GGKJL | Error: | ';' expected | jj NKJKFJOOPPDJCKF/GGKJL | ^

jshell> /edit 2 name ==> "anis nabilah sapawi" | modified variable name : String | update overwrote variable name : String

jshell> /list

1 : "anis" 3 : String $name = "SOC"; 4 : "universiti utara malaysia" 5 : $1==$4 6 : $1 + $4 7 : 7+8 8 : int age = 21; 9 : double price = 50.99; 10 : age + price 11 : age > price 12 : age != price 13 : String name = "anis nabilah sapawi";

jshell> public void main (){ ...> System.out.printIn("Hello World"); ...> } | Error: | cannot find symbol | symbol: method printIn(java.lang.String) | System.out.printIn("Hello World"); | ^----------------^

jshell> /method

jshell> /list

1 : "anis" 3 : String $name = "SOC"; 4 : "universiti utara malaysia" 5 : $1==$4 6 : $1 + $4 7 : 7+8 8 : int age = 21; 9 : double price = 50.99; 10 : age + price 11 : age > price 12 : age != price 13 : String name = "anis nabilah sapawi";

jshell> System.out.printIn("Hello World"); | Error: | cannot find symbol | symbol: method printIn(java.lang.String) | System.out.printIn("Hello World"); | ^----------------^

jshell> ...> } System.out.printIn("Hello World"); | Error: | illegal start of expression | ...> } System.out.printIn("Hello World"); | ^

jshell> ...> } System.out.printIn("Hello World"); | Error: | illegal start of expression | ...> } System.out.printIn("Hello World"); | ^

jshell> ...> }

[NurHaslinda44]

Microsoft Windows [Version 10.0.17134.590] (c) 2018 Microsoft Corporation. All rights reserved.

C:\Users\user>java -version java version "13" 2019-09-17 Java(TM) SE Runtime Environment (build 13+33) Java HotSpot(TM) 64-Bit Server VM (build 13+33, mixed mode, sharing)

C:\Users\user>jshell | Welcome to JShell -- Version 13 | For an introduction type: /help intro

jshell> haslinda | Error: | cannot find symbol | symbol: variable haslinda | haslinda | ^------^

jshell> "haslinda" $1 ==> "haslinda"

jshell> /vars | String $1 = "haslinda"

jshell> 'Universiti Utara Malaysia" | Error: | unclosed character literal | 'Universiti Utara Malaysia" | ^ | Error: | unclosed string literal | 'Universiti Utara Malaysia" | ^

jshell> "Universiti Utara Malaysia" $2 ==> "Universiti Utara Malaysia"

jshell> /vars | String $1 = "haslinda" | String $2 = "Universiti Utara Malaysia"

jshell> "haslinda#tag" $3 ==> "haslinda#tag"

jshell> /vars | String $1 = "haslinda" | String $2 = "Universiti Utara Malaysia" | String $3 = "haslinda#tag"

jshell> String nama = "nur haslinda" nama ==> "nur haslinda"

jshell> /vars | String $1 = "haslinda" | String $2 = "Universiti Utara Malaysia" | String $3 = "haslinda#tag" | String nama = "nur haslinda"

jshell> String "SOC" | Error: | ';' expected | String "SOC" | ^ | Error: | cannot find symbol | symbol: variable String | String "SOC" | ^----^

jshell> String $name = "SOC" $name ==> "SOC"

jshell> /vars | String $1 = "haslinda" | String $2 = "Universiti Utara Malaysia" | String $3 = "haslinda#tag" | String nama = "nur haslinda" | String $name = "SOC"

jshell> $1==$2 $6 ==> false

jshell> $1 + $2 $7 ==> "haslindaUniversiti Utara Malaysia"

jshell> $1<$2 | Error: | bad operand types for binary operator '<' | first type: java.lang.String | second type: java.lang.String | $1<$2 | ^---^

jshell> 7+8 $8 ==> 15

jshell> intr age = 21 | Error: | cannot find symbol | symbol: class intr | intr age = 21; | ^--^

jshell> int age = 21 age ==> 21

jshell> /vars | String $1 = "haslinda" | String $2 = "Universiti Utara Malaysia" | String $3 = "haslinda#tag" | String nama = "nur haslinda" | String $name = "SOC" | boolean $6 = false | String $7 = "haslindaUniversiti Utara Malaysia" | int $8 = 15 | int age = 21

jshell> double price = 50.99 price ==> 50.99

jshell> /vars | String $1 = "haslinda" | String $2 = "Universiti Utara Malaysia" | String $3 = "haslinda#tag" | String nama = "nur haslinda" | String $name = "SOC" | boolean $6 = false | String $7 = "haslindaUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99

jshell> age + price $11 ==> 71.99000000000001

jshell> age > price $12 ==> false

jshell> age ! = price | Error: | ';' expected | age ! = price | ^ | Error: | not a statement | age ! = price | ^---^

jshell> age != price $13 ==> true

jshell> /vars | String $1 = "haslinda" | String $2 = "Universiti Utara Malaysia" | String $3 = "haslinda#tag" | String nama = "nur haslinda" | String $name = "SOC" | boolean $6 = false | String $7 = "haslindaUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell>

jshell>

jshell> /help	Type a Java language expression, statement, or declaration.	Or type one of the following commands:	/list [	-all	-start]	list the source you have typed	/edit	edit a source entry	/drop	delete a source entry	/save [-all	-history	-start]	Save snippet source to a file	/open	open a file as source input	/vars [	-all	-start]	list the declared variables and their values	/methods [	-all	-start]	list the declared methods and their signatures	/types [	-all	-start]	list the type declarations	/imports	list the imported items	/exit []	exit the jshell tool	/env [-class-path ] [-module-path ] [-add-modules ] ...	view or change the evaluation context	/reset [-class-path ] [-module-path ] [-add-modules ]...	reset the jshell tool	/reload [-restore] [-quiet] [-class-path ] [-module-path ]...	reset and replay relevant history -- current or previous (-restore)	/history [-all]	history of what you have typed	/help [	]	get information about using the jshell tool	/set editor	start	feedback	mode	prompt	truncation	format ...	set configuration information	/? [	]	get information about using the jshell tool	/!	rerun last snippet -- see /help rerun	/	rerun snippets by ID or ID range -- see /help rerun	/-	rerun n-th previous snippet -- see /help rerun
For more information type '/help' followed by the name of a
command or a subject.
For example '/help /list' or '/help intro'.
Subjects:
intro
an introduction to the jshell tool
keys
a description of readline-like input editing
id
a description of snippet IDs and how use them
shortcuts
a description of keystrokes for snippet and command completion,
information access, and automatic code generation
context
a description of the evaluation context options for /env /reload and /reset
rerun
a description of ways to re-evaluate previously entered snippets

jshell>

jshell> /list

1 : "haslinda" 2 : "Universiti Utara Malaysia" 3 : "haslinda#tag" 4 : String nama = "nur haslinda"; 5 : String $name = "SOC"; 6 : $1==$2 7 : $1 + $2 8 : 7+8 9 : int age = 21; 10 : double price = 50.99; 11 : age + price 12 : age > price 13 : age != price

jshell> /vars | String $1 = "haslinda" | String $2 = "Universiti Utara Malaysia" | String $3 = "haslinda#tag" | String nama = "nur haslinda" | String $name = "SOC" | boolean $6 = false | String $7 = "haslindaUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> public static void main(String[] args){ ...> Sysytem.out.printIn("Hello World");} | Error: | package Sysytem does not exist | Sysytem.out.printIn("Hello World");} | ^---------^ | Warning: | Modifier 'static' not permitted in top-level declarations, ignored | public static void main(String[] args){ | ^-----------^

jshell> public void main () { ...> System.out.printIn(Hello World); ...> } | Error: | ')' expected | System.out.printIn(Hello World); | ^ | Error: | not a statement | System.out.printIn(Hello World); | ^---^ | Error: | ';' expected | System.out.printIn(Hello World); | ^

jshell> /method

jshell> /vars | String $1 = "haslinda" | String $2 = "Universiti Utara Malaysia" | String $3 = "haslinda#tag" | String nama = "nur haslinda" | String $name = "SOC" | boolean $6 = false | String $7 = "haslindaUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> /help	Type a Java language expression, statement, or declaration.	Or type one of the following commands:	/list [	-all	-start]	list the source you have typed	/edit	edit a source entry	/drop	delete a source entry	/save [-all	-history	-start]	Save snippet source to a file	/open	open a file as source input	/vars [	-all	-start]	list the declared variables and their values	/methods [	-all	-start]	list the declared methods and their signatures	/types [	-all	-start]	list the type declarations	/imports	list the imported items	/exit []	exit the jshell tool	/env [-class-path ] [-module-path ] [-add-modules ] ...	view or change the evaluation context	/reset [-class-path ] [-module-path ] [-add-modules ]...	reset the jshell tool	/reload [-restore] [-quiet] [-class-path ] [-module-path ]...	reset and replay relevant history -- current or previous (-restore)	/history [-all]	history of what you have typed	/help [	]	get information about using the jshell tool	/set editor	start	feedback	mode	prompt	truncation	format ...	set configuration information	/? [	]	get information about using the jshell tool	/!	rerun last snippet -- see /help rerun	/	rerun snippets by ID or ID range -- see /help rerun	/-	rerun n-th previous snippet -- see /help rerun
For more information type '/help' followed by the name of a
command or a subject.
For example '/help /list' or '/help intro'.
Subjects:
intro
an introduction to the jshell tool
keys
a description of readline-like input editing
id
a description of snippet IDs and how use them
shortcuts
a description of keystrokes for snippet and command completion,
information access, and automatic code generation
context
a description of the evaluation context options for /env /reload and /reset
rerun
a description of ways to re-evaluate previously entered snippets

jshell> /method

jshell> /methods

jshell> /list

1 : "haslinda" 2 : "Universiti Utara Malaysia" 3 : "haslinda#tag" 4 : String nama = "nur haslinda"; 5 : String $name = "SOC"; 6 : $1==$2 7 : $1 + $2 8 : 7+8 9 : int age = 21; 10 : double price = 50.99; 11 : age + price 12 : age > price 13 : age != price

jshell> /edit 15 | No snippet with ID: 15

jshell> /edit $14 ==> "haslinda UUM"

jshell> /vars | String $1 = "haslinda" | String $2 = "Universiti Utara Malaysia" | String $3 = "haslinda#tag" | String nama = "nur haslinda" | String $name = "SOC" | boolean $6 = false | String $7 = "haslindaUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true | String $14 = "haslinda UUM"

[anisadilamusa]

Microsoft Windows [Version 10.0.17134.648] (c) 2018 Microsoft Corporation. All rights reserved.

C:\Users\saya>java -version java version "12.0.2" 2019-07-16 Java(TM) SE Runtime Environment (build 12.0.2+10) Java HotSpot(TM) 64-Bit Server VM (build 12.0.2+10, mixed mode, sharing)

C:\Users\saya>jshell | Welcome to JShell -- Version 12.0.2 | For an introduction type: /help intro

jshell> anis | Error: | cannot find symbol | symbol: variable anis | anis | ^--^

jshell> "anis" $1 ==> "anis"

jshell> /exit | Goodbye

C:\Users\saya>jshell -v | Welcome to JShell -- Version 12.0.2 | For an introduction type: /help intro

jshell> "anis" $1 ==> "anis" | created scratch variable $1 : String

jshell> /vars | String $1 = "anis"

jshell> "anis adila" $2 ==> "anis adila" | created scratch variable $2 : String

jshell>

jshell> $1=$2 $1 ==> "anis adila" | assigned to $1 : String

jshell> double price = 50.99 price ==> 50.99 | created variable price : double

jshell> /vars | String $1 = "anis adila" | String $2 = "anis adila" | double price = 50.99

jshell> String $name = "soc" $name ==> "soc" | created variable $name : String

jshell> $1=$2 $1 ==> "anis adila" | assigned to $1 : String

jshell> $1==$2 $7 ==> true | created scratch variable $7 : boolean

jshell> $1 + $2 $8 ==> "anis adilaanis adila" | created scratch variable $8 : String

jshell> $1<$2 | Error: | bad operand types for binary operator '<' | first type: java.lang.String | second type: java.lang.String | $1<$2 | ^---^

jshell> 7 + 8 $9 ==> 15 | created scratch variable $9 : int

jshell> /vars | String $1 = "anis adila" | String $2 = "anis adila" | double price = 50.99 | String $name = "soc" | boolean $7 = true | String $8 = "anis adilaanis adila" | int $9 = 15

jshell> int age = 20 age ==> 20 | created variable age : int

jshell> int price = 50.99 | Error: | incompatible types: possible lossy conversion from double to int | int price = 50.99; | ^---^ | update overwrote variable price : double

jshell> /vars | String $1 = "anis adila" | String $2 = "anis adila" | String $name = "soc" | boolean $7 = true | String $8 = "anis adilaanis adila" | int $9 = 15 | int age = 20

jshell> age + price | Error: | cannot find symbol | symbol: variable price | age + price | ^---^

jshell> double price = 50.99 price ==> 50.99 | created variable price : double

jshell> age + price $12 ==> 70.99000000000001 | created scratch variable $12 : double

jshell> age > price $13 ==> false | created scratch variable $13 : boolean

jshell> age != price $14 ==> true | created scratch variable $14 : boolean

jshell> /vars | String $1 = "anis adila" | String $2 = "anis adila" | String $name = "soc" | boolean $7 = true | String $8 = "anis adilaanis adila" | int $9 = 15 | int age = 20 | double price = 50.99 | double $12 = 70.99000000000001 | boolean $13 = false | boolean $14 = true

jshell> /help	Type a Java language expression, statement, or declaration.	Or type one of the following commands:	/list [	-all	-start]	list the source you have typed	/edit	edit a source entry	/drop	delete a source entry	/save [-all	-history	-start]	Save snippet source to a file	/open	open a file as source input	/vars [	-all	-start]	list the declared variables and their values	/methods [	-all	-start]	list the declared methods and their signatures	/types [	-all	-start]	list the type declarations	/imports	list the imported items	/exit []	exit the jshell tool	/env [-class-path ] [-module-path ] [-add-modules ] ...	view or change the evaluation context	/reset [-class-path ] [-module-path ] [-add-modules ]...	reset the jshell tool	/reload [-restore] [-quiet] [-class-path ] [-module-path ]...	reset and replay relevant history -- current or previous (-restore)	/history [-all]	history of what you have typed	/help [	]	get information about using the jshell tool	/set editor	start	feedback	mode	prompt	truncation	format ...	set configuration information	/? [	]	get information about using the jshell tool	/!	rerun last snippet -- see /help rerun	/	rerun snippets by ID or ID range -- see /help rerun	/-	rerun n-th previous snippet -- see /help rerun
For more information type '/help' followed by the name of a
command or a subject.
For example '/help /list' or '/help intro'.
Subjects:
intro
an introduction to the jshell tool
keys
a description of readline-like input editing
id
a description of snippet IDs and how use them
shortcuts
a description of keystrokes for snippet and command completion,
information access, and automatic code generation
context
a description of the evaluation context options for /env /reload and /reset
rerun
a description of ways to re-evaluate previously entered snippets

jshell> /list

1 : "anis" 2 : "anis adila" 3 : $1=$2 5 : String $name = "soc"; 6 : $1=$2 7 : $1==$2 8 : $1 + $2 9 : 7 + 8 10 : int age = 20; 11 : double price = 50.99; 12 : age + price 13 : age > price 14 : age != price

jshell> /vars | String $1 = "anis adila" | String $2 = "anis adila" | String $name = "soc" | boolean $7 = true | String $8 = "anis adilaanis adila" | int $9 = 15 | int age = 20 | double price = 50.99 | double $12 = 70.99000000000001 | boolean $13 = false | boolean $14 = true

jshell> public static void main(atring[] args){ ...> System.out.println("Hello World") ...> } | Error: | ';' expected | System.out.println("Hello World") | ^

jshell> public void main (){ ...> System.out.println("Hello World") ...> } | Error: | ';' expected | System.out.println("Hello World") | ^

jshell> /list

1 : "anis" 2 : "anis adila" 3 : $1=$2 5 : String $name = "soc"; 6 : $1=$2 7 : $1==$2 8 : $1 + $2 9 : 7 + 8 10 : int age = 20; 11 : double price = 50.99; 12 : age + price 13 : age > price 14 : age != price

jshell> /vars | String $1 = "anis adila" | String $2 = "anis adila" | String $name = "soc" | boolean $7 = true | String $8 = "anis adilaanis adila" | int $9 = 15 | int age = 20 | double price = 50.99 | double $12 = 70.99000000000001 | boolean $13 = false | boolean $14 = true

jshell> public void main(){ ...> System.out.println("Hello World"); ...> } | created method main()

jshell> /list

1 : "anis" 2 : "anis adila" 3 : $1=$2 5 : String $name = "soc"; 6 : $1=$2 7 : $1==$2 8 : $1 + $2 9 : 7 + 8 10 : int age = 20; 11 : double price = 50.99; 12 : age + price 13 : age > price 14 : age != price 15 : public void main(){ System.out.println("Hello World"); }

jshell> public static void main(String[] args){ ...> System.out.println("Hello World") ...> } | Error: | ';' expected | System.out.println("Hello World") | ^

jshell> public statis void(String[] args){ ...> System.out.println("Hello World"); ...> } | Error: | ';' expected | public statis void(String[] args){ | ^ | Error: | illegal start of expression | public statis void(String[] args){ | ^--^ | Error: | ';' expected | public statis void(String[] args){ | ^ | Error: | ';' expected | public statis void(String[] args){ | ^ | Error: | cannot find symbol | symbol: variable statis | public statis void(String[] args){ | ^----^

jshell> /method | void main()

jshell> /methods | void main()

jshell> /methods | void main()

jshell> /edit 2

jshell> /list

1 : "anis" 2 : "anis adila" 3 : $1=$2 5 : String $name = "soc"; 6 : $1=$2 7 : $1==$2 8 : $1 + $2 9 : 7 + 8 10 : int age = 20; 11 : double price = 50.99; 12 : age + price 13 : age > price 14 : age != price 15 : public void main(){ System.out.println("Hello World"); }

[Yoncing99]

Microsoft Windows [Version 10.0.18362.356] (c) 2019 Microsoft Corporation. All rights reserved.

C:\Users\Auntie Goh>java -version java version "12.0.2" 2019-07-16 Java(TM) SE Runtime Environment (build 12.0.2+10) Java HotSpot(TM) 64-Bit Server VM (build 12.0.2+10, mixed mode, sharing)

C:\Users\Auntie Goh>jshell | Welcome to JShell -- Version 12.0.2 | For an introduction type: /help intro

jshell> yoncing | Error: | cannot find symbol | symbol: variable yoncing | yoncing | ^-----^

jshell> "yoncing" $1 ==> "yoncing"

jshell> /exit | Goodbye

C:\Users\Auntie Goh>jshell -v | Welcome to JShell -- Version 12.0.2 | For an introduction type: /help intro

jshell> "yoncing" $1 ==> "yoncing" | created scratch variable $1 : String

jshell> "Universiti Utara Malaysia" $2 ==> "Universiti Utara Malaysia" | created scratch variable $2 : String

jshell> "yoncing#tag"/vars | Error: | cannot find symbol | symbol: variable vars | "yoncing#tag"/vars | ^--^

jshell> "yoncing#tag" $3 ==> "yoncing#tag" | created scratch variable $3 : String

jshell> /vars | String $1 = "yoncing" | String $2 = "Universiti Utara Malaysia" | String $3 = "yoncing#tag"

jshell> String name="yoncing" name ==> "yoncing" | created variable name : String

jshell> String $name="SOC" $name ==> "SOC" | created variable $name : String

jshell> /vars | String $1 = "yoncing" | String $2 = "Universiti Utara Malaysia" | String $3 = "yoncing#tag" | String name = "yoncing" | String $name = "SOC"

jshell> $1==$2 $6 ==> false | created scratch variable $6 : boolean

jshell> $1+$2 $7 ==> "yoncingUniversiti Utara Malaysia" | created scratch variable $7 : String

jshell> $1<$2 | Error: | bad operand types for binary operator '<' | first type: java.lang.String | second type: java.lang.String | $1<$2 | ^---^

jshell> 7+8 $8 ==> 15 | created scratch variable $8 : int

jshell> int age=21 age ==> 21 | created variable age : int

jshell> /vars | String $1 = "yoncing" | String $2 = "Universiti Utara Malaysia" | String $3 = "yoncing#tag" | String name = "yoncing" | String $name = "SOC" | boolean $6 = false | String $7 = "yoncingUniversiti Utara Malaysia" | int $8 = 15 | int age = 21

jshell> int price=50.99 | Error: | incompatible types: possible lossy conversion from double to int | int price=50.99; | ^---^

jshell> duoble price=50.99 | Error: | cannot find symbol | symbol: class duoble | duoble price=50.99; | ^----^

jshell> double price=50.99 price ==> 50.99 | created variable price : double

jshell> /vars | String $1 = "yoncing" | String $2 = "Universiti Utara Malaysia" | String $3 = "yoncing#tag" | String name = "yoncing" | String $name = "SOC" | boolean $6 = false | String $7 = "yoncingUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99

jshell> age+price $11 ==> 71.99000000000001 | created scratch variable $11 : double

jshell> age>price $12 ==> false | created scratch variable $12 : boolean

jshell> /vars | String $1 = "yoncing" | String $2 = "Universiti Utara Malaysia" | String $3 = "yoncing#tag" | String name = "yoncing" | String $name = "SOC" | boolean $6 = false | String $7 = "yoncingUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false

jshell> age!=price $13 ==> true | created scratch variable $13 : boolean

jshell> /vars | String $1 = "yoncing" | String $2 = "Universiti Utara Malaysia" | String $3 = "yoncing#tag" | String name = "yoncing" | String $name = "SOC" | boolean $6 = false | String $7 = "yoncingUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> /help	Type a Java language expression, statement, or declaration.	Or type one of the following commands:	/list [	-all	-start]	list the source you have typed	/edit	edit a source entry	/drop	delete a source entry	/save [-all	-history	-start]	Save snippet source to a file	/open	open a file as source input	/vars [	-all	-start]	list the declared variables and their values	/methods [	-all	-start]	list the declared methods and their signatures	/types [	-all	-start]	list the type declarations	/imports	list the imported items	/exit []	exit the jshell tool	/env [-class-path ] [-module-path ] [-add-modules ] ...	view or change the evaluation context	/reset [-class-path ] [-module-path ] [-add-modules ]...	reset the jshell tool	/reload [-restore] [-quiet] [-class-path ] [-module-path ]...	reset and replay relevant history -- current or previous (-restore)	/history [-all]	history of what you have typed	/help [	]	get information about using the jshell tool	/set editor	start	feedback	mode	prompt	truncation	format ...	set configuration information	/? [	]	get information about using the jshell tool	/!	rerun last snippet -- see /help rerun	/	rerun snippets by ID or ID range -- see /help rerun	/-	rerun n-th previous snippet -- see /help rerun
For more information type '/help' followed by the name of a
command or a subject.
For example '/help /list' or '/help intro'.
Subjects:
intro
an introduction to the jshell tool
keys
a description of readline-like input editing
id
a description of snippet IDs and how use them
shortcuts
a description of keystrokes for snippet and command completion,
information access, and automatic code generation
context
a description of the evaluation context options for /env /reload and /reset
rerun
a description of ways to re-evaluate previously entered snippets

jshell> /list

1 : "yoncing" 2 : "Universiti Utara Malaysia" 3 : "yoncing#tag" 4 : String name="yoncing"; 5 : String $name="SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age=21; 10 : double price=50.99; 11 : age+price 12 : age>price 13 : age!=price

jshell> /vars | String $1 = "yoncing" | String $2 = "Universiti Utara Malaysia" | String $3 = "yoncing#tag" | String name = "yoncing" | String $name = "SOC" | boolean $6 = false | String $7 = "yoncingUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> public static void main(String[]args){ ...> System.out.println("Hello World"); ...> } | Warning: | Modifier 'static' not permitted in top-level declarations, ignored | public static void main(String[]args){ | ^-----------^ | created method main(String[])

jshell> public void main(){ ...> System.out.println("Hello World"); ...> } | created method main()

jshell> /vars | String $1 = "yoncing" | String $2 = "Universiti Utara Malaysia" | String $3 = "yoncing#tag" | String name = "yoncing" | String $name = "SOC" | boolean $6 = false | String $7 = "yoncingUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> /list

1 : "yoncing" 2 : "Universiti Utara Malaysia" 3 : "yoncing#tag" 4 : String name="yoncing"; 5 : String $name="SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age=21; 10 : double price=50.99; 11 : age+price 12 : age>price 13 : age!=price 14 : public static void main(String[]args){ System.out.println("Hello World"); } 15 : public void main(){ System.out.println("Hello World"); }

jshell> /help	Type a Java language expression, statement, or declaration.	Or type one of the following commands:	/list [	-all	-start]	list the source you have typed	/edit	edit a source entry	/drop	delete a source entry	/save [-all	-history	-start]	Save snippet source to a file	/open	open a file as source input	/vars [	-all	-start]	list the declared variables and their values	/methods [	-all	-start]	list the declared methods and their signatures	/types [	-all	-start]	list the type declarations	/imports	list the imported items	/exit []	exit the jshell tool	/env [-class-path ] [-module-path ] [-add-modules ] ...	view or change the evaluation context	/reset [-class-path ] [-module-path ] [-add-modules ]...	reset the jshell tool	/reload [-restore] [-quiet] [-class-path ] [-module-path ]...	reset and replay relevant history -- current or previous (-restore)	/history [-all]	history of what you have typed	/help [	]	get information about using the jshell tool	/set editor	start	feedback	mode	prompt	truncation	format ...	set configuration information	/? [	]	get information about using the jshell tool	/!	rerun last snippet -- see /help rerun	/	rerun snippets by ID or ID range -- see /help rerun	/-	rerun n-th previous snippet -- see /help rerun
For more information type '/help' followed by the name of a
command or a subject.
For example '/help /list' or '/help intro'.
Subjects:
intro
an introduction to the jshell tool
keys
a description of readline-like input editing
id
a description of snippet IDs and how use them
shortcuts
a description of keystrokes for snippet and command completion,
information access, and automatic code generation
context
a description of the evaluation context options for /env /reload and /reset
rerun
a description of ways to re-evaluate previously entered snippets

jshell> /methods | void main(String[]) | void main()

jshell> /edit 15 | modified method main() | update overwrote method main()

jshell> /edit 2 jshell> /list

1 : "yoncing" 2 : "Universiti Utara Malaysia" 3 : "yoncing#tag" 4 : String name="yoncing"; 5 : String $name="SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age=21; 10 : double price=50.99; 11 : age+price 12 : age>price 13 : age!=price 14 : public static void main(String[]args){ System.out.println("Hello World"); } 16 : public void main(){ System.out.println("Hello yoncing uum"); }

[nasyiqin]

Microsoft Windows [Version 10.0.17134.1006] (c) 2018 Microsoft Corporation. All rights reserved.

C:\Users\HP>jshell | Welcome to JShell -- Version 12.0.2 | For an introduction type: /help intro

jshell> "syiqin" $1 ==> "syiqin"

jshell> /exit | Goodbye

C:\Users\HP>jshell -v | Welcome to JShell -- Version 12.0.2 | For an introduction type: /help intro

jshell> "syiqin" $1 ==> "syiqin" | created scratch variable $1 : String

jshell> "UUM" $2 ==> "UUM" | created scratch variable $2 : String

jshell> /vars | String $1 = "syiqin" | String $2 = "UUM"

jshell> String name = "syiqin nawi" name ==> "syiqin nawi" | created variable name : String

jshell> String $name = "SOC" $name ==> "SOC" | created variable $name : String

jshell> $1 + $2 $5 ==> "syiqinUUM" | created scratch variable $5 : String

jshell> $1==$2 $6 ==> false | created scratch variable $6 : boolean

jshell> 7-0 $7 ==> 7 | created scratch variable $7 : int

jshell> int age = 21 age ==> 21 | created variable age : int

jshell> /vars | String $1 = "syiqin" | String $2 = "UUM" | String name = "syiqin nawi" | String $name = "SOC" | String $5 = "syiqinUUM" | boolean $6 = false | int $7 = 7 | int age = 21

jshell> double price = 60.10 price ==> 60.1 | created variable price : double

jshell> /vars | String $1 = "syiqin" | String $2 = "UUM" | String name = "syiqin nawi" | String $name = "SOC" | String $5 = "syiqinUUM" | boolean $6 = false | int $7 = 7 | int age = 21 | double price = 60.1

jshell> age + price $10 ==> 81.1 | created scratch variable $10 : double

jshell> age > price $11 ==> false | created scratch variable $11 : boolean

jshell> /vars | String $1 = "syiqin" | String $2 = "UUM" | String name = "syiqin nawi" | String $name = "SOC" | String $5 = "syiqinUUM" | boolean $6 = false | int $7 = 7 | int age = 21 | double price = 60.1 | double $10 = 81.1 | boolean $11 = false

jshell> /help	Type a Java language expression, statement, or declaration.	Or type one of the following commands:	/list [	-all	-start]	list the source you have typed	/edit	edit a source entry	/drop	delete a source entry	/save [-all	-history	-start]	Save snippet source to a file	/open	open a file as source input	/vars [	-all	-start]	list the declared variables and their values	/methods [	-all	-start]	list the declared methods and their signatures	/types [	-all	-start]	list the type declarations	/imports	list the imported items	/exit []	exit the jshell tool	/env [-class-path ] [-module-path ] [-add-modules ] ...	view or change the evaluation context	/reset [-class-path ] [-module-path ] [-add-modules ]...	reset the jshell tool	/reload [-restore] [-quiet] [-class-path ] [-module-path ]...	reset and replay relevant history -- current or previous (-restore)	/history [-all]	history of what you have typed	/help [	]	get information about using the jshell tool	/set editor	start	feedback	mode	prompt	truncation	format ...	set configuration information	/? [	]	get information about using the jshell tool	/!	rerun last snippet -- see /help rerun	/	rerun snippets by ID or ID range -- see /help rerun	/-	rerun n-th previous snippet -- see /help rerun
For more information type '/help' followed by the name of a
command or a subject.
For example '/help /list' or '/help intro'.
Subjects:
intro
an introduction to the jshell tool
keys
a description of readline-like input editing
id
a description of snippet IDs and how use them
shortcuts
a description of keystrokes for snippet and command completion,
information access, and automatic code generation
context
a description of the evaluation context options for /env /reload and /reset
rerun
a description of ways to re-evaluate previously entered snippets

jshell> /list

1 : "syiqin" 2 : "UUM" 3 : String name = "syiqin nawi"; 4 : String $name = "SOC"; 5 : $1 + $2 6 : $1==$2 7 : 7-0 8 : int age = 21; 9 : double price = 60.10; 10 : age + price 11 : age > price

jshell> /vars | String $1 = "syiqin" | String $2 = "UUM" | String name = "syiqin nawi" | String $name = "SOC" | String $5 = "syiqinUUM" | boolean $6 = false | int $7 = 7 | int age = 21 | double price = 60.1 | double $10 = 81.1 | boolean $11 = false

jshell> public void main(String [] args){ ...> System.out.println("Hello World"); ...> } | created method main(String [])

jshell> /list

1 : "syiqin" 2 : "UUM" 3 : String name = "syiqin nawi"; 4 : String $name = "SOC"; 5 : $1 + $2 6 : $1==$2 7 : 7-0 8 : int age = 21; 9 : double price = 60.10; 10 : age + price 11 : age > price 12 : public void main(String [] args){ System.out.println("Hello World"); }

jshell> /vars | String $1 = "syiqin" | String $2 = "UUM" | String name = "syiqin nawi" | String $name = "SOC" | String $5 = "syiqinUUM" | boolean $6 = false | int $7 = 7 | int age = 21 | double price = 60.1 | double $10 = 81.1 | boolean $11 = false

jshell> public static void main(String [] args){ ...> System.out.println("Hello World"); ...> } | Warning: | Modifier 'static' not permitted in top-level declarations, ignored | public static void main(String [] args){ | ^-----------^ | modified method main(String []) | update overwrote method main(String [])

jshell> /list

1 : "syiqin" 2 : "UUM" 3 : String name = "syiqin nawi"; 4 : String $name = "SOC"; 5 : $1 + $2 6 : $1==$2 7 : 7-0 8 : int age = 21; 9 : double price = 60.10; 10 : age + price 11 : age > price 13 : public static void main(String [] args){ System.out.println("Hello World"); }

jshell> public static void main(String [] args){ ...> System.out.println("Hello World"); ...> } | Warning: | Modifier 'static' not permitted in top-level declarations, ignored | public static void main(String [] args){ | ^-----------^ | modified method main(String []) | update overwrote method main(String [])

jshell> public void main(String [] args){ ...> System.out.println("Hello World"); ...> } | modified method main(String []) | update overwrote method main(String [])

jshell> /list

1 : "syiqin" 2 : "UUM" 3 : String name = "syiqin nawi"; 4 : String $name = "SOC"; 5 : $1 + $2 6 : $1==$2 7 : 7-0 8 : int age = 21; 9 : double price = 60.10; 10 : age + price 11 : age > price 15 : public void main(String [] args){ System.out.println("Hello World"); }

jshell> /methods | void main(String [])

jshell> public void main(){ ...> System.out.println("Hello World"); ...> } | created method main()

jshell> /methods | void main(String []) | void main()

jshell> /list

1 : "syiqin" 2 : "UUM" 3 : String name = "syiqin nawi"; 4 : String $name = "SOC"; 5 : $1 + $2 6 : $1==$2 7 : 7-0 8 : int age = 21; 9 : double price = 60.10; 10 : age + price 11 : age > price 15 : public void main(String [] args){ System.out.println("Hello World"); } 16 : public void main(){ System.out.println("Hello World"); }

jshell> /edit 16 | modified method main() | update overwrote method main()

jshell> /list

1 : "syiqin" 2 : "UUM" 3 : String name = "syiqin nawi"; 4 : String $name = "SOC"; 5 : $1 + $2 6 : $1==$2 7 : 7-0 8 : int age = 21; 9 : double price = 60.10; 10 : age + price 11 : age > price 15 : public void main(String [] args){ System.out.println("Hello World"); } 17 : public void main(){ System.out.println("Hello syiqin"); }

[kaiting0415]

Microsoft Windows [Version 10.0.17763.737] (c) 2018 Microsoft Corporation. All rights reserved.

C:\Users\MSI-PC>java -version java version "1.8.0_221" Java(TM) SE Runtime Environment (build 1.8.0_221-b11) Java HotSpot(TM) 64-Bit Server VM (build 25.221-b11, mixed mode)

C:\Users\MSI-PC>jshell | Welcome to JShell -- Version 12.0.2 | For an introduction type: /help intro

jshell> kaiting | Error: | cannot find symbol | symbol: variable kaiting | kaiting | ^-----^

jshell> "kaiting" $1 ==> "kaiting"

jshell> /exit | Goodbye

C:\Users\MSI-PC>jshell -v | Welcome to JShell -- Version 12.0.2 | For an introduction type: /help intro

jshell> kaiting | Error: | cannot find symbol | symbol: variable kaiting | kaiting | ^-----^

jshell> "kaiting" $1 ==> "kaiting" | created scratch variable $1 : String

jshell> "Universiti Utara Malaysia" $2 ==> "Universiti Utara Malaysia" | created scratch variable $2 : String

jshell> "kaiting#tag" $3 ==> "kaiting#tag" | created scratch variable $3 : String

jshell> /vars | String $1 = "kaiting" | String $2 = "Universiti Utara Malaysia" | String $3 = "kaiting#tag"

jshell> String name = "kaiting" name ==> "kaiting" | created variable name : String

jshell> String $name = "SOC" $name ==> "SOC" | created variable $name : String

jshell> /vars | String $1 = "kaiting" | String $2 = "Universiti Utara Malaysia" | String $3 = "kaiting#tag" | String name = "kaiting" | String $name = "SOC"

jshell> $1=$2 $1 ==> "Universiti Utara Malaysia" | assigned to $1 : String

jshell> $1==$2 $7 ==> true | created scratch variable $7 : boolean

jshell> $2==$3 $8 ==> false | created scratch variable $8 : boolean

jshell> $1==$2 $9 ==> true | created scratch variable $9 : boolean

jshell> $1 + $2 $10 ==> "Universiti Utara MalaysiaUniversiti Utara Malaysia" | created scratch variable $10 : String

jshell> /vars | String $1 = "Universiti Utara Malaysia" | String $2 = "Universiti Utara Malaysia" | String $3 = "kaiting#tag" | String name = "kaiting" | String $name = "SOC" | boolean $7 = true | boolean $8 = false | boolean $9 = true | String $10 = "Universiti Utara MalaysiaUniversiti Utara Malaysia"

jshell> $1 = "kaiting" $1 ==> "kaiting" | assigned to $1 : String

jshell> /vars | String $1 = "kaiting" | String $2 = "Universiti Utara Malaysia" | String $3 = "kaiting#tag" | String name = "kaiting" | String $name = "SOC" | boolean $7 = true | boolean $8 = false | boolean $9 = true | String $10 = "Universiti Utara MalaysiaUniversiti Utara Malaysia"

jshell> $1 + $2 $12 ==> "kaitingUniversiti Utara Malaysia" | created scratch variable $12 : String

jshell> 7+8 $13 ==> 15 | created scratch variable $13 : int

jshell> int age = 21 age ==> 21 | created variable age : int

jshell> /vars | String $1 = "kaiting" | String $2 = "Universiti Utara Malaysia" | String $3 = "kaiting#tag" | String name = "kaiting" | String $name = "SOC" | boolean $7 = true | boolean $8 = false | boolean $9 = true | String $10 = "Universiti Utara MalaysiaUniversiti Utara Malaysia" | String $12 = "kaitingUniversiti Utara Malaysia" | int $13 = 15 | int age = 21

jshell> int price = 50.99 | Error: | incompatible types: possible lossy conversion from double to int | int price = 50.99; | ^---^

jshell> double price = 50.99 price ==> 50.99 | created variable price : double

jshell> /vars | String $1 = "kaiting" | String $2 = "Universiti Utara Malaysia" | String $3 = "kaiting#tag" | String name = "kaiting" | String $name = "SOC" | boolean $7 = true | boolean $8 = false | boolean $9 = true | String $10 = "Universiti Utara MalaysiaUniversiti Utara Malaysia" | String $12 = "kaitingUniversiti Utara Malaysia" | int $13 = 15 | int age = 21 | double price = 50.99

jshell> age age ==> 21 | value of age : int

jshell> age + price $17 ==> 71.99000000000001 | created scratch variable $17 : double

jshell> age > price $18 ==> false | created scratch variable $18 : boolean

jshell> /vars | String $1 = "kaiting" | String $2 = "Universiti Utara Malaysia" | String $3 = "kaiting#tag" | String name = "kaiting" | String $name = "SOC" | boolean $7 = true | boolean $8 = false | boolean $9 = true | String $10 = "Universiti Utara MalaysiaUniversiti Utara Malaysia" | String $12 = "kaitingUniversiti Utara Malaysia" | int $13 = 15 | int age = 21 | double price = 50.99 | double $17 = 71.99000000000001 | boolean $18 = false

jshell> /help	Type a Java language expression, statement, or declaration.	Or type one of the following commands:	/list [	-all	-start]	list the source you have typed	/edit	edit a source entry	/drop	delete a source entry	/save [-all	-history	-start]	Save snippet source to a file	/open	open a file as source input	/vars [	-all	-start]	list the declared variables and their values	/methods [	-all	-start]	list the declared methods and their signatures	/types [	-all	-start]	list the type declarations	/imports	list the imported items	/exit []	exit the jshell tool	/env [-class-path ] [-module-path ] [-add-modules ] ...	view or change the evaluation context	/reset [-class-path ] [-module-path ] [-add-modules ]...	reset the jshell tool	/reload [-restore] [-quiet] [-class-path ] [-module-path ]...	reset and replay relevant history -- current or previous (-restore)	/history [-all]	history of what you have typed	/help [	]	get information about using the jshell tool	/set editor	start	feedback	mode	prompt	truncation	format ...	set configuration information	/? [	]	get information about using the jshell tool	/!	rerun last snippet -- see /help rerun	/	rerun snippets by ID or ID range -- see /help rerun	/-	rerun n-th previous snippet -- see /help rerun
For more information type '/help' followed by the name of a
command or a subject.
For example '/help /list' or '/help intro'.
Subjects:
intro
an introduction to the jshell tool
keys
a description of readline-like input editing
id
a description of snippet IDs and how use them
shortcuts
a description of keystrokes for snippet and command completion,
information access, and automatic code generation
context
a description of the evaluation context options for /env /reload and /reset
rerun
a description of ways to re-evaluate previously entered snippets

jshell> /list

1 : "kaiting" 2 : "Universiti Utara Malaysia" 3 : "kaiting#tag" 4 : String name = "kaiting"; 5 : String $name = "SOC"; 6 : $1=$2 7 : $1==$2 8 : $2==$3 9 : $1==$2 10 : $1 + $2 11 : $1 = "kaiting" 12 : $1 + $2 13 : 7+8 14 : int age = 21; 15 : double price = 50.99; 16 : age 17 : age + price 18 : age > price

jshell> /vars | String $1 = "kaiting" | String $2 = "Universiti Utara Malaysia" | String $3 = "kaiting#tag" | String name = "kaiting" | String $name = "SOC" | boolean $7 = true | boolean $8 = false | boolean $9 = true | String $10 = "Universiti Utara MalaysiaUniversiti Utara Malaysia" | String $12 = "kaitingUniversiti Utara Malaysia" | int $13 = 15 | int age = 21 | double price = 50.99 | double $17 = 71.99000000000001 | boolean $18 = false

jshell> public static void main(string[] args){} | Warning: | Modifier 'static' not permitted in top-level declarations, ignored | public static void main(string[] args){} | ^-----------^ | created method main(string[]), however, it cannot be referenced until class string is declared and this error is corrected: | Modifier 'static' not permitted in top-level declarations, ignored | public static void main(string[] args){} | ^-----------^

jshell> public void main(){System.out.println("Hello World");} | created method main()

jshell> /vars | String $1 = "kaiting" | String $2 = "Universiti Utara Malaysia" | String $3 = "kaiting#tag" | String name = "kaiting" | String $name = "SOC" | boolean $7 = true | boolean $8 = false | boolean $9 = true | String $10 = "Universiti Utara MalaysiaUniversiti Utara Malaysia" | String $12 = "kaitingUniversiti Utara Malaysia" | int $13 = 15 | int age = 21 | double price = 50.99 | double $17 = 71.99000000000001 | boolean $18 = false

jshell> /list

1 : "kaiting" 2 : "Universiti Utara Malaysia" 3 : "kaiting#tag" 4 : String name = "kaiting"; 5 : String $name = "SOC"; 6 : $1=$2 7 : $1==$2 8 : $2==$3 9 : $1==$2 10 : $1 + $2 11 : $1 = "kaiting" 12 : $1 + $2 13 : 7+8 14 : int age = 21; 15 : double price = 50.99; 16 : age 17 : age + price 18 : age > price 19 : public static void main(string[] args){} 20 : public void main(){System.out.println("Hello World");}

jshell> /methods | void main(string[]) | which cannot be referenced until class string is declared | void main()

jshell> /list

1 : "kaiting" 2 : "Universiti Utara Malaysia" 3 : "kaiting#tag" 4 : String name = "kaiting"; 5 : String $name = "SOC"; 6 : $1=$2 7 : $1==$2 8 : $2==$3 9 : $1==$2 10 : $1 + $2 11 : $1 = "kaiting" 12 : $1 + $2 13 : 7+8 14 : int age = 21; 15 : double price = 50.99; 16 : age 17 : age + price 18 : age > price 19 : public static void main(string[] args){} 20 : public void main(){System.out.println("Hello World");}

jshell> /edit 20

jshell> /edit 2

jshell> /list

1 : "kaiting" 2 : "Universiti Utara Malaysia" 3 : "kaiting#tag" 4 : String name = "kaiting"; 5 : String $name = "SOC"; 6 : $1=$2 7 : $1==$2 8 : $2==$3 9 : $1==$2 10 : $1 + $2 11 : $1 = "kaiting" 12 : $1 + $2 13 : 7+8 14 : int age = 21; 15 : double price = 50.99; 16 : age 17 : age + price 18 : age > price 19 : public static void main(string[] args){} 20 : public void main(){System.out.println("Hello World");}

jshell> /edit 2 $21 ==> "Universiti Utara Malaysia UUM" | created scratch variable $21 : String

jshell> /list

1 : "kaiting" 2 : "Universiti Utara Malaysia" 3 : "kaiting#tag" 4 : String name = "kaiting"; 5 : String $name = "SOC"; 6 : $1=$2 7 : $1==$2 8 : $2==$3 9 : $1==$2 10 : $1 + $2 11 : $1 = "kaiting" 12 : $1 + $2 13 : 7+8 14 : int age = 21; 15 : double price = 50.99; 16 : age 17 : age + price 18 : age > price 19 : public static void main(string[] args){} 20 : public void main(){System.out.println("Hello World");} 21 : "Universiti Utara Malaysia UUM";

[KamarudinYusoff]

| created variable $name : String

jshell> /vars | String $1 = "kamarudin" | String $2 = "#MrProDin" | String name = "kamarudin yusoff" | String $name = "SOC"

jshell> "Universiti Utara Malaysia" $5 ==> "Universiti Utara Malaysia" | created scratch variable $5 : String

jshell> $1==$2 $6 ==> false | created scratch variable $6 : boolean

jshell> /vars | String $1 = "kamarudin" | String $2 = "#MrProDin" | String name = "kamarudin yusoff" | String $name = "SOC" | String $5 = "Universiti Utara Malaysia" | boolean $6 = false

jshell> $1 + $2 $7 ==> "kamarudin#MrProDin" | created scratch variable $7 : String

jshell> $1<$2 | Error: | bad operand types for binary operator '<' | first type: java.lang.String | second type: java.lang.String | $1<$2 | ^---^

jshell> 7+8 $8 ==> 15 | created scratch variable $8 : int

jshell> int age = 21 age ==> 21 | created variable age : int

jshell> /vars | String $1 = "kamarudin" | String $2 = "#MrProDin" | String name = "kamarudin yusoff" | String $name = "SOC" | String $5 = "Universiti Utara Malaysia" | boolean $6 = false | String $7 = "kamarudin#MrProDin" | int $8 = 15 | int age = 21

jshell> int price = 50.99 | Error: | incompatible types: possible lossy conversion from double to int | int price = 50.99; | ^---^

jshell> double price = 50.99 price ==> 50.99 | created variable price : double

jshell> /vars | String $1 = "kamarudin" | String $2 = "#MrProDin" | String name = "kamarudin yusoff" | String $name = "SOC" | String $5 = "Universiti Utara Malaysia" | boolean $6 = false | String $7 = "kamarudin#MrProDin" | int $8 = 15 | int age = 21 | double price = 50.99

jshell> age + price $11 ==> 71.99000000000001 | created scratch variable $11 : double

jshell> age > price $12 ==> false | created scratch variable $12 : boolean

jshell> age != price $13 ==> true | created scratch variable $13 : boolean

jshell>

jshell>

jshell>

jshell>

jshell>

jshell>

jshell>

jshell> /help | Type a Java language expression, statement, or declaration. | Or type one of the following commands: | /list [|-all|-start] | list the source you have typed | /edit | edit a source entry | /drop | delete a source entry | /save [-all|-history|-start] | Save snippet source to a file | /open | open a file as source input | /vars [|-all|-start] | list the declared variables and their values | /methods [|-all|-start] | list the declared methods and their signatures | /types [|-all|-start] | list the type declarations | /imports | list the imported items | /exit [] | exit the jshell tool | /env [-class-path ] [-module-path ] [-add-modules ] ... | view or change the evaluation context | /reset [-class-path ] [-module-path ] [-add-modules ]...

reset the jshell tool	/reload [-restore] [-quiet] [-class-path ] [-module-path ]...	reset and replay relevant history -- current or previous (-restore)	/history [-all]	history of what you have typed	/help [	]	get information about using the jshell tool	/set editor	start	feedback	mode	prompt	truncation	format ...	set configuration information	/? [	]	get information about using the jshell tool	/!	rerun last snippet -- see /help rerun	/	rerun snippets by ID or ID range -- see /help rerun	/-	rerun n-th previous snippet -- see /help rerun
For more information type '/help' followed by the name of a
command or a subject.
For example '/help /list' or '/help intro'.
Subjects:
intro
an introduction to the jshell tool
keys
a description of readline-like input editing
id
a description of snippet IDs and how use them
shortcuts
a description of keystrokes for snippet and command completion,
information access, and automatic code generation
context
a description of the evaluation context options for /env /reload and /re

set | rerun | a description of ways to re-evaluate previously entered snippets

jshell> /list

1 : "kamarudin" 2 : "#MrProDin" 3 : String name = "kamarudin yusoff"; 4 : String $name = "SOC"; 5 : "Universiti Utara Malaysia" 6 : $1==$2 7 : $1 + $2 8 : 7+8 9 : int age = 21; 10 : double price = 50.99; 11 : age + price 12 : age > price 13 : age != price

jshell> /vars | String $1 = "kamarudin" | String $2 = "#MrProDin" | String name = "kamarudin yusoff" | String $name = "SOC" | String $5 = "Universiti Utara Malaysia" | boolean $6 = false | String $7 = "kamarudin#MrProDin" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> public static void main( <press tab again to see all possible completions; total possible completions: 53 1> jshell> public static void main(String[]args){} | Warning: | Modifier 'static' not permitted in top-level declarations, ignored | public static void main(String[]args){} | ^-----------^ | created method main(String[])

jshell> public void main(){ ...> System.out.println("Hello World"); ...> } | created method main()

jshell> public static void main(String[]args){ ...> System.out.println("Hello World"); ...> } | Warning: | Modifier 'static' not permitted in top-level declarations, ignored | public static void main(String[]args){ | ^-----------^ | modified method main(String[]) | update overwrote method main(String[])

jshell> /list

1 : "kamarudin" 2 : "#MrProDin" 3 : String name = "kamarudin yusoff"; 4 : String $name = "SOC"; 5 : "Universiti Utara Malaysia" 6 : $1==$2 7 : $1 + $2 8 : 7+8 9 : int age = 21; 10 : double price = 50.99; 11 : age + price 12 : age > price 13 : age != price 15 : public void main(){ System.out.println("Hello World"); } 16 : public static void main(String[]args){ System.out.println("Hello World"); }

jshell> /method | void main() | void main(String[])

jshell> /list

1 : "kamarudin" 2 : "#MrProDin" 3 : String name = "kamarudin yusoff"; 4 : String $name = "SOC"; 5 : "Universiti Utara Malaysia" 6 : $1==$2 7 : $1 + $2 8 : 7+8 9 : int age = 21; 10 : double price = 50.99; 11 : age + price 12 : age > price 13 : age != price 15 : public void main(){ System.out.println("Hello World"); } 16 : public static void main(String[]args){ System.out.println("Hello World"); }

jshell> /edit 15 | modified method main() | update overwrote method main()

jshell> /list

1 : "kamarudin" 2 : "#MrProDin" 3 : String name = "kamarudin yusoff"; 4 : String $name = "SOC"; 5 : "Universiti Utara Malaysia" 6 : $1==$2 7 : $1 + $2 8 : 7+8 9 : int age = 21; 10 : double price = 50.99; 11 : age + price 12 : age > price 13 : age != price 16 : public static void main(String[]args){ System.out.println("Hello World"); } 17 : public void main(){ System.out.println("Hello World Din"); }

jshell> /edit 2

[adamnuqman]

Microsoft Windows [Version 6.3.9600] (c) 2013 Microsoft Corporation. All rights reserved.

C:\Users\user>java -version java version "13" 2019-09-17 Java(TM) SE Runtime Environment (build 13+33) Java HotSpot(TM) 64-Bit Server VM (build 13+33, mixed mode, sharing)

C:\Users\user>jshell | Welcome to JShell -- Version 13 | For an introduction type: /help intro

jshell> "adam" $1 ==> "adam"

jshell> "kelantan" $2 ==> "kelantan"

jshell> /vrs | Invalid command: /vrs | Type /help for help.

jshell> /vars | String $1 = "adam" | String $2 = "kelantan"

jshell> String name name ==> null

jshell> s1=s2 | Error: | cannot find symbol | symbol: variable s1 | s1=s2 | ^^ | Error: | cannot find symbol | symbol: variable s2 | s1=s2 | ^^

jshell> $1=$2 $1 ==> "kelantan"

jshell> $1==$2 $5 ==> true

jshell> "adam nuqman" $6 ==> "adam nuqman"

jshell> /vars | String $1 = "kelantan" | String $2 = "kelantan" | String name = null | boolean $5 = true | String $6 = "adam nuqman"

jshell> $1+$6 $7 ==> "kelantanadam nuqman"

jshell> 0.1+1 $8 ==> 1.1

jshell> int price=50.99 | Error: | incompatible types: possible lossy conversion from double to int | int price=50.99; | ^---^

jshell> 7=8 | Error: | unexpected type | required: variable | found: value | 7=8 | ^

jshell> /vars | String $1 = "kelantan" | String $2 = "kelantan" | String name = null | boolean $5 = true | String $6 = "adam nuqman" | String $7 = "kelantanadam nuqman" | double $8 = 1.1

jshell> int=1.1 | Error: | '.class' expected | int=1.1 | ^ | Error: | unexpected type | required: variable | found: class | int=1.1 | ^-^

jshell> double=1.1 | Error: | '.class' expected | double=1.1 | ^ | Error: | unexpected type | required: variable | found: class | double=1.1 | ^----^

jshell> double price=50.99 price ==> 50.99

jshell> /vars | String $1 = "kelantan" | String $2 = "kelantan" | String name = null | boolean $5 = true | String $6 = "adam nuqman" | String $7 = "kelantanadam nuqman" | double $8 = 1.1 | double price = 50.99

jshell> int age=19 age ==> 19

jshell> /vars | String $1 = "kelantan" | String $2 = "kelantan" | String name = null | boolean $5 = true | String $6 = "adam nuqman" | String $7 = "kelantanadam nuqman" | double $8 = 1.1 | double price = 50.99 | int age = 19

jshell> age+price $11 ==> 69.99000000000001

jshell> String name="adam nuqman" name ==> "adam nuqman"

jshell> /vars | String $1 = "kelantan" | String $2 = "kelantan" | boolean $5 = true | String $6 = "adam nuqman" | String $7 = "kelantanadam nuqman" | double $8 = 1.1 | double price = 50.99 | int age = 19 | double $11 = 69.99000000000001 | String name = "adam nuqman"

jshell> /help | Type a Java language expression, statement, or declaration. | Or type one of the following commands: | /list [|-all|-start] | list the source you have typed | /edit | edit a source entry | /drop | delete a source entry | /save [-all|-history|-start] | Save snippet source to a file | /open | open a file as source input | /vars [|-all|-start] | list the declared variables and their values | /methods [|-all|-start] | list the declared methods and their signatures | /types [|-all|-start] | list the type declarations | /imports | list the imported items | /exit [] | exit the jshell tool | /env [-class-path ] [-module-path ] [-add-modules ] ... | view or change the evaluation context | /reset [-class-path ] [-module-path ] [-add-modules ]...

reset the jshell tool	/reload [-restore] [-quiet] [-class-path ] [-module-path ]...	reset and replay relevant history -- current or previous (-restore)	/history [-all]	history of what you have typed	/help [	]	get information about using the jshell tool	/set editor	start	feedback	mode	prompt	truncation	format ...	set configuration information	/? [	]	get information about using the jshell tool	/!	rerun last snippet -- see /help rerun	/	rerun snippets by ID or ID range -- see /help rerun	/-	rerun n-th previous snippet -- see /help rerun
For more information type '/help' followed by the name of a
command or a subject.
For example '/help /list' or '/help intro'.
Subjects:
intro
an introduction to the jshell tool
keys
a description of readline-like input editing
id
a description of snippet IDs and how use them
shortcuts
a description of keystrokes for snippet and command completion,
information access, and automatic code generation
context
a description of the evaluation context options for /env /reload and /re

set | rerun | a description of ways to re-evaluate previously entered snippets

jshell> /list

1 : "adam" 2 : "kelantan" 4 : $1=$2 5 : $1==$2 6 : "adam nuqman" 7 : $1+$6 8 : 0.1+1 9 : double price=50.99; 10 : int age=19; 11 : age+price 12 : String name="adam nuqman";

jshell> age>price $13 ==> false

jshell> /vars | String $1 = "kelantan" | String $2 = "kelantan" | boolean $5 = true | String $6 = "adam nuqman" | String $7 = "kelantanadam nuqman" | double $8 = 1.1 | double price = 50.99 | int age = 19 | double $11 = 69.99000000000001 | String name = "adam nuqman" | boolean $13 = false

jshell> public void main(){ ...> System.out.println("Hello World"); ...> } | created method main()

jshell> /metthods | Invalid command: /metthods | Type /help for help.

jshell> /methods | void main()

jshell> /edit8 | Invalid command: /edit8 | Type /help for help.

jshell> /list

1 : "adam" 2 : "kelantan" 4 : $1=$2 5 : $1==$2 6 : "adam nuqman" 7 : $1+$6 8 : 0.1+1 9 : double price=50.99; 10 : int age=19; 11 : age+price 12 : String name="adam nuqman"; 13 : age>price 14 : public void main(){ System.out.println("Hello World"); }

jshell> /edit

jshell>

[abraham-ravichandran]

C:\Users\ADMIN>jshell | Welcome to JShell -- Version 12.0.2 | For an introduction type: /help intro jshell> /exit | Goodbye jshell> "abraham" $1 ==> "abraham" jshell> /vars | String $1 = "abraham"

jshell> /list

1 : "abraham" 2 : "good" 3 : $1==$2 4 : $1+$2 5 : 7+8 6 : int age =21; 7 : double price = 50.99; 8 : age + price 9 : age > price 10 : public void main(string[] args){ System.out.println("HelloWorld"); } 11 : System.out.println("HelloWorld");

jshell> /vars | String $1 = "abraham" | String $2 = "good" | boolean $3 = false | String $4 = "abrahamgood" | int $5 = 15 | int age = 21 | double price = 50.99 | double $8 = 71.99000000000001 | boolean $9 = false

jshell> /help	Type a Java language expression, statement, or declaration.	Or type one of the following commands:	/list [	-all	-start]	list the source you have typed	/edit	edit a source entry	/drop	delete a source entry	/save [-all	-history	-start]	Save snippet source to a file	/open	open a file as source input	/vars [	-all	-start]	list the declared variables and their values	/methods [	-all	-start]	list the declared methods and their signatures	/types [	-all	-start]	list the type declarations	/imports	list the imported items	/exit []	exit the jshell tool	/env [-class-path ] [-module-path ] [-add-modules ] ...	view or change the evaluation context	/reset [-class-path ] [-module-path ] [-add-modules ]...	reset the jshell tool	/reload [-restore] [-quiet] [-class-path ] [-module-path ]...	reset and replay relevant history -- current or previous (-restore)	/history [-all]	history of what you have typed	/help [	]	get information about using the jshell tool	/set editor	start	feedback	mode	prompt	truncation	format ...	set configuration information	/? [	]	get information about using the jshell tool	/!	rerun last snippet -- see /help rerun	/	rerun snippets by ID or ID range -- see /help rerun	/-	rerun n-th previous snippet -- see /help rerun
For more information type '/help' followed by the name of a
command or a subject.
For example '/help /list' or '/help intro'.
Subjects:
intro
an introduction to the jshell tool
keys
a description of readline-like input editing
id
a description of snippet IDs and how use them
shortcuts
a description of keystrokes for snippet and command completion,
information access, and automatic code generation
context
a description of the evaluation context options for /env /reload and /reset
rerun
a description of ways to re-evaluate previously entered snippets

jshell>shell> /vars | String $1 = "abraham" | String $2 = "good" | boolean $3 = false | String $4 = "abrahamgood" | int $5 = 15 | int age = 21 | double price = 50.99 | double $8 = 71.99000000000001 | boolean $9 = false | boolean $12 = false | double $13 = 71.99000000000001 | boolean $14 = true

jshell> /methods | void main(string[]) | which cannot be referenced until class string is declared

jshell> /list

1 : "abraham" 2 : "good" 3 : $1==$2 4 : $1+$2 5 : 7+8 6 : int age =21; 7 : double price = 50.99; 8 : age + price 9 : age > price 10 : public void main(string[] args){ System.out.println("HelloWorld"); } 11 : System.out.println("HelloWorld"); 12 : age > price 13 : age + price 14 : age !=price 15 : age = 21

jshell>jshell> /vars | String $1 = "abraham" | String $2 = "good" | boolean $3 = false | String $4 = "abrahamgood" | int $5 = 15 | int age = 21 | double price = 50.99 | double $8 = 71.99000000000001 | boolean $9 = false | boolean $12 = false | double $13 = 71.99000000000001 | boolean $14 = true | boolean $16 = false | boolean $17 = true

jshell>

[suhadaibrahim]

Microsoft Windows [Version 10.0.18362.356] (c) 2019 Microsoft Corporation. All rights reserved.

C:\Users\samsulrizal>java -version java version "12.0.2" 2019-07-16 Java(TM) SE Runtime Environment (build 12.0.2+10) Java HotSpot(TM) 64-Bit Server VM (build 12.0.2+10, mixed mode, sharing)

C:\Users\samsulrizal>jshell | Welcome to JShell -- Version 12.0.2 | For an introduction type: /help intro

jshell> suhadaibrahim | Error: | cannot find symbol | symbol: variable suhadaibrahim | suhadaibrahim | ^-----------^

jshell> "suhadaibrahim" $1 ==> "suhadaibrahim"

jshell> /vars | String $1 = "suhadaibrahim"

jshell> "Universiti Utara Malaysia" $2 ==> "Universiti Utara Malaysia"

jshell> /vars | String $1 = "suhadaibrahim" | String $2 = "Universiti Utara Malaysia"

jshell> "suhada#taq" $3 ==> "suhada#taq"

jshell> /vars | String $1 = "suhadaibrahim" | String $2 = "Universiti Utara Malaysia" | String $3 = "suhada#taq"

jshell> String name = suhadaibrahim | Error: | cannot find symbol | symbol: variable suhadaibrahim | String name = suhadaibrahim; | ^-----------^

jshell> /vars | String $1 = "suhadaibrahim" | String $2 = "Universiti Utara Malaysia" | String $3 = "suhada#taq"

jshell> String name = "suhadaibrahim" name ==> "suhadaibrahim"

jshell> /vars | String $1 = "suhadaibrahim" | String $2 = "Universiti Utara Malaysia" | String $3 = "suhada#taq" | String name = "suhadaibrahim"

jshell> String $ name = "SOC" | Error: | ';' expected | String $ name = "SOC"; | ^

jshell> String $name = "SOC" $name ==> "SOC"

jshell> /vars | String $1 = "suhadaibrahim" | String $2 = "Universiti Utara Malaysia" | String $3 = "suhada#taq" | String name = "suhadaibrahim" | String $name = "SOC"

jshell> $1==$2 $6 ==> false

jshell> $1 + $2 $7 ==> "suhadaibrahimUniversiti Utara Malaysia"

jshell> $1<$2 | Error: | bad operand types for binary operator '<' | first type: java.lang.String | second type: java.lang.String | $1<$2 | ^---^

jshell> 7+8 $8 ==> 15

jshell> int age = 21 age ==> 21

jshell>

jshell> /vars | String $1 = "suhadaibrahim" | String $2 = "Universiti Utara Malaysia" | String $3 = "suhada#taq" | String name = "suhadaibrahim" | String $name = "SOC" | boolean $6 = false | String $7 = "suhadaibrahimUniversiti Utara Malaysia" | int $8 = 15 | int age = 21

jshell> double price = 50.99 price ==> 50.99

jshell> /vars | String $1 = "suhadaibrahim" | String $2 = "Universiti Utara Malaysia" | String $3 = "suhada#taq" | String name = "suhadaibrahim" | String $name = "SOC" | boolean $6 = false | String $7 = "suhadaibrahimUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99

jshell> age = price | Error: | incompatible types: possible lossy conversion from double to int | age = price | ^---^

jshell> age + price $11 ==> 71.99000000000001

jshell> age > price $12 ==> false

jshell> age != price $13 ==> true

jshell> /vars | String $1 = "suhadaibrahim" | String $2 = "Universiti Utara Malaysia" | String $3 = "suhada#taq" | String name = "suhadaibrahim" | String $name = "SOC" | boolean $6 = false | String $7 = "suhadaibrahimUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> /help	Type a Java language expression, statement, or declaration.	Or type one of the following commands:	/list [	-all	-start]	list the source you have typed	/edit	edit a source entry	/drop	delete a source entry	/save [-all	-history	-start]	Save snippet source to a file	/open	open a file as source input	/vars [	-all	-start]	list the declared variables and their values	/methods [	-all	-start]	list the declared methods and their signatures	/types [	-all	-start]	list the type declarations	/imports	list the imported items	/exit []	exit the jshell tool	/env [-class-path ] [-module-path ] [-add-modules ] ...	view or change the evaluation context	/reset [-class-path ] [-module-path ] [-add-modules ]...	reset the jshell tool	/reload [-restore] [-quiet] [-class-path ] [-module-path ]...	reset and replay relevant history -- current or previous (-restore)	/history [-all]	history of what you have typed	/help [	]	get information about using the jshell tool	/set editor	start	feedback	mode	prompt	truncation	format ...	set configuration information	/? [	]	get information about using the jshell tool	/!	rerun last snippet -- see /help rerun	/	rerun snippets by ID or ID range -- see /help rerun	/-	rerun n-th previous snippet -- see /help rerun
For more information type '/help' followed by the name of a
command or a subject.
For example '/help /list' or '/help intro'.
Subjects:
intro
an introduction to the jshell tool
keys
a description of readline-like input editing
id
a description of snippet IDs and how use them
shortcuts
a description of keystrokes for snippet and command completion,
information access, and automatic code generation
context
a description of the evaluation context options for /env /reload and /reset
rerun
a description of ways to re-evaluate previously entered snippets

jshell> /list

1 : "suhadaibrahim" 2 : "Universiti Utara Malaysia" 3 : "suhada#taq" 4 : String name = "suhadaibrahim"; 5 : String $name = "SOC"; 6 : $1==$2 7 : $1 + $2 8 : 7+8 9 : int age = 21; 10 : double price = 50.99; 11 : age + price 12 : age > price 13 : age != price

jshell> /vars | String $1 = "suhadaibrahim" | String $2 = "Universiti Utara Malaysia" | String $3 = "suhada#taq" | String name = "suhadaibrahim" | String $name = "SOC" | boolean $6 = false | String $7 = "suhadaibrahimUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> public static void main(String[] args){ ...> System.out.printIn("Hello World"); ...> } | Error: | cannot find symbol | symbol: method printIn(java.lang.String) | System.out.printIn("Hello World"); | ^----------------^ | Warning: | Modifier 'static' not permitted in top-level declarations, ignored | public static void main(String[] args){ | ^-----------^

jshell> /vars | String $1 = "suhadaibrahim" | String $2 = "Universiti Utara Malaysia" | String $3 = "suhada#taq" | String name = "suhadaibrahim" | String $name = "SOC" | boolean $6 = false | String $7 = "suhadaibrahimUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> /help	Type a Java language expression, statement, or declaration.	Or type one of the following commands:	/list [	-all	-start]	list the source you have typed	/edit	edit a source entry	/drop	delete a source entry	/save [-all	-history	-start]	Save snippet source to a file	/open	open a file as source input	/vars [	-all	-start]	list the declared variables and their values	/methods [	-all	-start]	list the declared methods and their signatures	/types [	-all	-start]	list the type declarations	/imports	list the imported items	/exit []	exit the jshell tool	/env [-class-path ] [-module-path ] [-add-modules ] ...	view or change the evaluation context	/reset [-class-path ] [-module-path ] [-add-modules ]...	reset the jshell tool	/reload [-restore] [-quiet] [-class-path ] [-module-path ]...	reset and replay relevant history -- current or previous (-restore)	/history [-all]	history of what you have typed	/help [	]	get information about using the jshell tool	/set editor	start	feedback	mode	prompt	truncation	format ...	set configuration information	/? [	]	get information about using the jshell tool	/!	rerun last snippet -- see /help rerun	/	rerun snippets by ID or ID range -- see /help rerun	/-	rerun n-th previous snippet -- see /help rerun
For more information type '/help' followed by the name of a
command or a subject.
For example '/help /list' or '/help intro'.
Subjects:
intro
an introduction to the jshell tool
keys
a description of readline-like input editing
id
a description of snippet IDs and how use them
shortcuts
a description of keystrokes for snippet and command completion,
information access, and automatic code generation
context
a description of the evaluation context options for /env /reload and /reset
rerun
a description of ways to re-evaluate previously entered snippets

jshell> /list

1 : "suhadaibrahim" 2 : "Universiti Utara Malaysia" 3 : "suhada#taq" 4 : String name = "suhadaibrahim"; 5 : String $name = "SOC"; 6 : $1==$2 7 : $1 + $2 8 : 7+8 9 : int age = 21; 10 : double price = 50.99; 11 : age + price 12 : age > price 13 : age != price

jshell> /edit $14 ==> "suhadaibrahim UUM"

jshell> /vars | String $1 = "suhadaibrahim" | String $2 = "Universiti Utara Malaysia" | String $3 = "suhada#taq" | String name = "suhadaibrahim" | String $name = "SOC" | boolean $6 = false | String $7 = "suhadaibrahimUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true | String $14 = "suhadaibrahim UUM"

jshell>

[juliney21]

java version "12.0.2" 2019-07-16
Java(TM) SE Runtime Environment (build 12.0.2+10)
Java HotSpot(TM) 64-Bit Server VM (build 12.0.2+10, mixed mode, sharing)

C:\Users\Aspire E1>jshell
|  Welcome to JShell -- Version 12.0.2
|  For an introduction type: /help intro

jshell> julie
|  Error:
|  cannot find symbol
|    symbol:   variable julie
|  julie
|  ^---^

jshell> "julie"
$1 ==> "julie"

jshell> /exit
|  Goodbye

C:\Users\Aspire E1>jshell -v
|  Welcome to JShell -- Version 12.0.2
|  For an introduction type: /help intro

jshell> "julie"
$1 ==> "julie"
|  created scratch variable $1 : String

jshell> "julie#tag"
$2 ==> "julie#tag"
|  created scratch variable $2 : String

jshell> /vars
|    String $1 = "julie"
|    String $2 = "julie#tag"

jshell> String name = "Juliney Sen"
name ==> "Juliney Sen"
|  created variable name : String

jshell> String $name = "SOC"
$name ==> "SOC"
|  created variable $name : String

jshell> /vars
|    String $1 = "julie"
|    String $2 = "julie#tag"
|    String name = "Juliney Sen"
|    String $name = "SOC"

jshell> $1==$2
$5 ==> false
|  created scratch variable $5 : boolean

jshell> $1 + $2
$6 ==> "juliejulie#tag"
|  created scratch variable $6 : String

jshell> 7+8
$7 ==> 15
|  created scratch variable $7 : int

jshell> int age = 21
age ==> 21
|  created variable age : int

jshell> /vars
|    String $1 = "julie"
|    String $2 = "julie#tag"
|    String name = "Juliney Sen"
|    String $name = "SOC"
|    boolean $5 = false
|    String $6 = "juliejulie#tag"
|    int $7 = 15
|    int age = 21

jshell> int price = 50.99
|  Error:
|  incompatible types: possible lossy conversion from double to int
|  int price = 50.99;
|              ^---^

jshell> double price = 50.99
price ==> 50.99
|  created variable price : double

jshell> /vars
|    String $1 = "julie"
|    String $2 = "julie#tag"
|    String name = "Juliney Sen"
|    String $name = "SOC"
|    boolean $5 = false
|    String $6 = "juliejulie#tag"
|    int $7 = 15
|    int age = 21
|    double price = 50.99

jshell> age + price
$10 ==> 71.99000000000001
|  created scratch variable $10 : double

jshell> age>price
$11 ==> false
|  created scratch variable $11 : boolean

jshell> age!= price
$12 ==> true
|  created scratch variable $12 : boolean

jshell> /vars
|    String $1 = "julie"
|    String $2 = "julie#tag"
|    String name = "Juliney Sen"
|    String $name = "SOC"
|    boolean $5 = false
|    String $6 = "juliejulie#tag"
|    int $7 = 15
|    int age = 21
|    double price = 50.99
|    double $10 = 71.99000000000001
|    boolean $11 = false
|    boolean $12 = true

jshell> /help
|  Type a Java language expression, statement, or declaration.
|  Or type one of the following commands:
|  /list [<name or id>|-all|-start]
|       list the source you have typed
|  /edit <name or id>
|       edit a source entry
|  /drop <name or id>
|       delete a source entry
|  /save [-all|-history|-start] <file>
|       Save snippet source to a file
|  /open <file>
|       open a file as source input
|  /vars [<name or id>|-all|-start]
|       list the declared variables and their values
|  /methods [<name or id>|-all|-start]
|       list the declared methods and their signatures
|  /types [<name or id>|-all|-start]
|       list the type declarations
|  /imports
|       list the imported items
|  /exit [<integer-expression-snippet>]
|       exit the jshell tool
|  /env [-class-path <path>] [-module-path <path>] [-add-modules <modules>] ...
|       view or change the evaluation context
|  /reset [-class-path <path>] [-module-path <path>] [-add-modules <modules>]...

|       reset the jshell tool
|  /reload [-restore] [-quiet] [-class-path <path>] [-module-path <path>]...
|       reset and replay relevant history -- current or previous (-restore)
|  /history [-all]
|       history of what you have typed
|  /help [<command>|<subject>]
|       get information about using the jshell tool
|  /set editor|start|feedback|mode|prompt|truncation|format ...
|       set configuration information
|  /? [<command>|<subject>]
|       get information about using the jshell tool
|  /!
|       rerun last snippet -- see /help rerun
|  /<id>
|       rerun snippets by ID or ID range -- see /help rerun
|  /-<n>
|       rerun n-th previous snippet -- see /help rerun
|
|  For more information type '/help' followed by the name of a
|  command or a subject.
|  For example '/help /list' or '/help intro'.
|
|  Subjects:
|
|  intro
|       an introduction to the jshell tool
|  keys
|       a description of readline-like input editing
|  id
|       a description of snippet IDs and how use them
|  shortcuts
|       a description of keystrokes for snippet and command completion,
|       information access, and automatic code generation
|  context
|       a description of the evaluation context options for /env /reload and /re
set
|  rerun
|       a description of ways to re-evaluate previously entered snippets

jshell> /list

   1 : "julie"
   2 : "julie#tag"
   3 : String name = "Juliney Sen";
   4 : String $name = "SOC";
   5 : $1==$2
   6 : $1 + $2
   7 : 7+8
   8 : int age = 21;
   9 : double price = 50.99;
  10 : age + price
  11 : age>price
  12 : age!= price

jshell> /vars
|    String $1 = "julie"
|    String $2 = "julie#tag"
|    String name = "Juliney Sen"
|    String $name = "SOC"
|    boolean $5 = false
|    String $6 = "juliejulie#tag"
|    int $7 = 15
|    int age = 21
|    double price = 50.99
|    double $10 = 71.99000000000001
|    boolean $11 = false
|    boolean $12 = true

jshell> public static void main(String[] args){
   ...> System.out.print("HelloWorld");
   ...> }
|  Warning:
|  Modifier 'static'  not permitted in top-level declarations, ignored
|  public static void main(String[] args){
|  ^-----------^
|  created method main(String[])

jshell> public void main(){
   ...> System.out.println("HelloWorld");
   ...> }
|  created method main()

jshell> /list

   1 : "julie"
   2 : "julie#tag"
   3 : String name = "Juliney Sen";
   4 : String $name = "SOC";
   5 : $1==$2
   6 : $1 + $2
   7 : 7+8
   8 : int age = 21;
   9 : double price = 50.99;
  10 : age + price
  11 : age>price
  12 : age!= price
  13 : public static void main(String[] args){
       System.out.print("HelloWorld");
       }
  14 : public void main(){
       System.out.println("HelloWorld");
       }

jshell> /vars
|    String $1 = "julie"
|    String $2 = "julie#tag"
|    String name = "Juliney Sen"
|    String $name = "SOC"
|    boolean $5 = false
|    String $6 = "juliejulie#tag"
|    int $7 = 15
|    int age = 21
|    double price = 50.99
|    double $10 = 71.99000000000001
|    boolean $11 = false
|    boolean $12 = true

jshell> /methods
|    void main(String[])
|    void main()

jshell> /edit 14

jshell> /list

   1 : "julie"
   2 : "julie#tag"
   3 : String name = "Juliney Sen";
   4 : String $name = "SOC";
   5 : $1==$2
   6 : $1 + $2
   7 : 7+8
   8 : int age = 21;
   9 : double price = 50.99;
  10 : age + price
  11 : age>price
  12 : age!= price
  13 : public static void main(String[] args){
       System.out.print("HelloWorld");
       }
  14 : public void main(){
       System.out.println("HelloWorld");
       }

jshell> /edit 2

[Chaijiesheng]

Microsoft Windows [Version 10.0.18362.356] (c) 2019 Microsoft Corporation. All rights reserved.

C:\Users\Jie Sheng>java -version java version "12.0.2" 2019-07-16 Java(TM) SE Runtime Environment (build 12.0.2+10) Java HotSpot(TM) 64-Bit Server VM (build 12.0.2+10, mixed mode, sharing)

C:\Users\Jie Sheng>jshell | Welcome to JShell -- Version 12.0.2 | For an introduction type: /help intro

jshell>

jiesheng | Error: | cannot find symbol | symbol: variable jiesheng | jiesheng | ^------^

jshell> "jiesheng" $1 ==> "jiesheng"

jshell> /exit | Goodbye

C:\Users\Jie Sheng>jshell -v | Welcome to JShell -- Version 12.0.2 | For an introduction type: /help intro

jshell> jiesheng | Error: | cannot find symbol | symbol: variable jiesheng | jiesheng | ^------^

jshell> "jiesheng" $1 ==> "jiesheng" | created scratch variable $1 : String

jshell> "universiti Utara Malaysia" $2 ==> "universiti Utara Malaysia" | created scratch variable $2 : String

jshell> "jiesheng#tag" $3 ==> "jiesheng#tag" | created scratch variable $3 : String

jshell> 'jiesheng' jshell> : | unclosed character literal jshell> heng' | ^ jshell> : | unclosed character literal jshell> heng' | ^ jshell> : | reached end of file while parsing | 'jiesheng' | ^

jshell> /vars | String $1 = "jiesheng" | String $2 = "universiti Utara Malaysia" | String $3 = "jiesheng#tag"

jshell> String name = "chai jie sheng" name ==> "chai jie sheng" | created variable name : String

jshell> "SOC" $5 ==> "SOC" | created scratch variable $5 : String

jshell> /vars | String $1 = "jiesheng" | String $2 = "universiti Utara Malaysia" | String $3 = "jiesheng#tag" | String name = "chai jie sheng" | String $5 = "SOC"

jshell> s1==s2 | Error: | cannot find symbol | symbol: variable s1 | s1==s2 | ^^ | Error: | cannot find symbol | symbol: variable s2 | s1==s2 | ^^

jshell> $1==$2 $6 ==> false | created scratch variable $6 : boolean

jshell> $1+$2 $7 ==> "jieshenguniversiti Utara Malaysia" | created scratch variable $7 : String

jshell> $1<$2 | Error: | bad operand types for binary operator '<' | first type: java.lang.String | second type: java.lang.String | $1<$2 | ^---^

jshell> 7+8 $8 ==> 15 | created scratch variable $8 : int

jshell> int age = 21 age ==> 21 | created variable age : int

jshell> /vars | String $1 = "jiesheng" | String $2 = "universiti Utara Malaysia" | String $3 = "jiesheng#tag" | String name = "chai jie sheng" | String $5 = "SOC" | boolean $6 = false | String $7 = "jieshenguniversiti Utara Malaysia" | int $8 = 15 | int age = 21

jshell> int price = 50.99 | Error: | incompatible types: possible lossy conversion from double to int | int price = 50.99; | ^---^

jshell> double price = 50.99 price ==> 50.99 | created variable price : double

jshell> /vars | String $1 = "jiesheng" | String $2 = "universiti Utara Malaysia" | String $3 = "jiesheng#tag" | String name = "chai jie sheng" | String $5 = "SOC" | boolean $6 = false | String $7 = "jieshenguniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99

jshell> age + price $11 ==> 71.99000000000001 | created scratch variable $11 : double

jshell> age>price $12 ==> false | created scratch variable $12 : boolean

jshell> age!=price $13 ==> true | created scratch variable $13 : boolean

jshell> /vars | String $1 = "jiesheng" | String $2 = "universiti Utara Malaysia" | String $3 = "jiesheng#tag" | String name = "chai jie sheng" | String $5 = "SOC" | boolean $6 = false | String $7 = "jieshenguniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> /help	Type a Java language expression, statement, or declaration.	Or type one of the following commands:	/list [	-all	-start]	list the source you have typed	/edit	edit a source entry	/drop	delete a source entry	/save [-all	-history	-start]	Save snippet source to a file	/open	open a file as source input	/vars [	-all	-start]	list the declared variables and their values	/methods [	-all	-start]	list the declared methods and their signatures	/types [	-all	-start]	list the type declarations	/imports	list the imported items	/exit []	exit the jshell tool	/env [-class-path ] [-module-path ] [-add-modules ] ...	view or change the evaluation context	/reset [-class-path ] [-module-path ] [-add-modules ]...	reset the jshell tool	/reload [-restore] [-quiet] [-class-path ] [-module-path ]...	reset and replay relevant history -- current or previous (-restore)	/history [-all]	history of what you have typed	/help [	]	get information about using the jshell tool	/set editor	start	feedback	mode	prompt	truncation	format ...	set configuration information	/? [	]	get information about using the jshell tool	/!	rerun last snippet -- see /help rerun	/	rerun snippets by ID or ID range -- see /help rerun	/-	rerun n-th previous snippet -- see /help rerun
For more information type '/help' followed by the name of a
command or a subject.
For example '/help /list' or '/help intro'.
Subjects:
intro
an introduction to the jshell tool
keys
a description of readline-like input editing
id
a description of snippet IDs and how use them
shortcuts
a description of keystrokes for snippet and command completion,
information access, and automatic code generation
context
a description of the evaluation context options for /env /reload and /reset
rerun
a description of ways to re-evaluate previously entered snippets

jshell> /list

1 : "jiesheng" 2 : "universiti Utara Malaysia" 3 : "jiesheng#tag" 4 : String name = "chai jie sheng"; 5 : "SOC" 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age = 21; 10 : double price = 50.99; 11 : age + price 12 : age>price 13 : age!=price

jshell> /vars | String $1 = "jiesheng" | String $2 = "universiti Utara Malaysia" | String $3 = "jiesheng#tag" | String name = "chai jie sheng" | String $5 = "SOC" | boolean $6 = false | String $7 = "jieshenguniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> public static void main(String[]args{ System.out.println("Hello World");} ...> ...> ...> /exit ...> System.out.println("Hello World"); ...> } | Error: | ',', ')', or '[' expected | public static void main(String[]args{ System.out.println("Hello World");} | ^

jshell> public static void main(String[]args){ ...> System.out.println("Hello World"); ...> } | Warning: | Modifier 'static' not permitted in top-level declarations, ignored | public static void main(String[]args){ | ^-----------^ | created method main(String[])

jshell> public void main(){ ...> System.out.println("Hello World"); ...> } | created method main()

jshell> /list

1 : "jiesheng" 2 : "universiti Utara Malaysia" 3 : "jiesheng#tag" 4 : String name = "chai jie sheng"; 5 : "SOC" 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age = 21; 10 : double price = 50.99; 11 : age + price 12 : age>price 13 : age!=price 14 : public static void main(String[]args){ System.out.println("Hello World"); } 15 : public void main(){ System.out.println("Hello World"); }

jshell> /vars | String $1 = "jiesheng" | String $2 = "universiti Utara Malaysia" | String $3 = "jiesheng#tag" | String name = "chai jie sheng" | String $5 = "SOC" | boolean $6 = false | String $7 = "jieshenguniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> /method | void main(String[]) | void main()

jshell> /list

1 : "jiesheng" 2 : "universiti Utara Malaysia" 3 : "jiesheng#tag" 4 : String name = "chai jie sheng"; 5 : "SOC" 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age = 21; 10 : double price = 50.99; 11 : age + price 12 : age>price 13 : age!=price 14 : public static void main(String[]args){ System.out.println("Hello World"); } 15 : public void main(){ System.out.println("Hello World"); }

jshell> /edit 15

jshell> /edit 15 | modified method main() | update overwrote method main()

jshell> /list

1 : "jiesheng" 2 : "universiti Utara Malaysia" 3 : "jiesheng#tag" 4 : String name = "chai jie sheng"; 5 : "SOC" 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age = 21; 10 : double price = 50.99; 11 : age + price 12 : age>price 13 : age!=price 14 : public static void main(String[]args){ System.out.println("Hello World"); } 16 : public void main(){ System.out.println("Hello World"); }

jshell> /edit 2

jshell> /edit 2 $17 ==> "universiti Utara Malaysia" | created scratch variable $17 : String

jshell> /list

1 : "jiesheng" 2 : "universiti Utara Malaysia" 3 : "jiesheng#tag" 4 : String name = "chai jie sheng"; 5 : "SOC" 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age = 21; 10 : double price = 50.99; 11 : age + price 12 : age>price 13 : age!=price 14 : public static void main(String[]args){ System.out.println("Hello World"); } 16 : public void main(){ System.out.println("Hello World"); } 17 : "universiti Utara Malaysia";

[NgMO132]

Microsoft Windows [Version 10.0.17763.737] (c) 2018 Microsoft Corporation. All rights reserved.

C:\Users\ngmun>java -version java version "13" 2019-09-17 Java(TM) SE Runtime Environment (build 13+33) Java HotSpot(TM) 64-Bit Server VM (build 13+33, mixed mode, sharing)

C:\Users\ngmun>jshell | Welcome to JShell -- Version 13 | For an introduction type: /help intro

jshell> "NgMunOnn" $1 ==> "NgMunOnn"

jshell> /exit | Goodbye

C:\Users\ngmun> -v '-v' is not recognized as an internal or external command, operable program or batch file.

C:\Users\ngmun>jshell -v | Welcome to JShell -- Version 13 | For an introduction type: /help intro

jshell> "NgMunOnn" $1 ==> "NgMunOnn" | created scratch variable $1 : String

jshell> "Universiti Utara Malaysia" $2 ==> "Universiti Utara Malaysia" | created scratch variable $2 : String

jshell> "NgMunOnn#tag" $3 ==> "NgMunOnn#tag" | created scratch variable $3 : String

jshell> 'NgMunOnn' | Error: | unclosed character literal | 'NgMunOnn' | ^ | Error: | unclosed character literal | 'NgMunOnn' | ^ | Error: | reached end of file while parsing | 'NgMunOnn' | ^

jshell> /vars | String $1 = "NgMunOnn" | String $2 = "Universiti Utara Malaysia" | String $3 = "NgMunOnn#tag"

jshell> String name ="NgMunOnn" name ==> "NgMunOnn" | created variable name : String

jshell> String $name ="SOC" $name ==> "SOC" | created variable $name : String

jshell> /vars | String $1 = "NgMunOnn" | String $2 = "Universiti Utara Malaysia" | String $3 = "NgMunOnn#tag" | String name = "NgMunOnn" | String $name = "SOC"

jshell> s1==s2 | Error: | cannot find symbol | symbol: variable s1 | s1==s2 | ^^ | Error: | cannot find symbol | symbol: variable s2 | s1==s2 | ^^

jshell> $1==S2 | Error: | cannot find symbol | symbol: variable S2 | $1==S2 | ^^

jshell> $1==$2 $6 ==> false | created scratch variable $6 : boolean

jshell> $1+$2 $7 ==> "NgMunOnnUniversiti Utara Malaysia" | created scratch variable $7 : String

jshell> $1-$2 | Error: | bad operand types for binary operator '-' | first type: java.lang.String | second type: java.lang.String | $1-$2 | ^---^

jshell> 19+18 $8 ==> 37 | created scratch variable $8 : int

jshell> int age 21 | Error: | ';' expected | int age 21 | ^

jshell> int age =21 age ==> 21 | created variable age : int

jshell> /vars | String $1 = "NgMunOnn" | String $2 = "Universiti Utara Malaysia" | String $3 = "NgMunOnn#tag" | String name = "NgMunOnn" | String $name = "SOC" | boolean $6 = false | String $7 = "NgMunOnnUniversiti Utara Malaysia" | int $8 = 37 | int age = 21

jshell> int price =50.99 | Error: | incompatible types: possible lossy conversion from double to int | int price =50.99; | ^---^

jshell> double price =50.99 price ==> 50.99 | created variable price : double

jshell> /vars | String $1 = "NgMunOnn" | String $2 = "Universiti Utara Malaysia" | String $3 = "NgMunOnn#tag" | String name = "NgMunOnn" | String $name = "SOC" | boolean $6 = false | String $7 = "NgMunOnnUniversiti Utara Malaysia" | int $8 = 37 | int age = 21 | double price = 50.99

jshell> age + price $11 ==> 71.99000000000001 | created scratch variable $11 : double

jshell> age > price $12 ==> false | created scratch variable $12 : boolean

jshell> age!=price $13 ==> true | created scratch variable $13 : boolean

jshell> /vars | String $1 = "NgMunOnn" | String $2 = "Universiti Utara Malaysia" | String $3 = "NgMunOnn#tag" | String name = "NgMunOnn" | String $name = "SOC" | boolean $6 = false | String $7 = "NgMunOnnUniversiti Utara Malaysia" | int $8 = 37 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> /help	Type a Java language expression, statement, or declaration.	Or type one of the following commands:	/list [	-all	-start]	list the source you have typed	/edit	edit a source entry	/drop	delete a source entry	/save [-all	-history	-start]	Save snippet source to a file	/open	open a file as source input	/vars [	-all	-start]	list the declared variables and their values	/methods [	-all	-start]	list the declared methods and their signatures	/types [	-all	-start]	list the type declarations	/imports	list the imported items	/exit []	exit the jshell tool	/env [-class-path ] [-module-path ] [-add-modules ] ...	view or change the evaluation context	/reset [-class-path ] [-module-path ] [-add-modules ]...	reset the jshell tool	/reload [-restore] [-quiet] [-class-path ] [-module-path ]...	reset and replay relevant history -- current or previous (-restore)	/history [-all]	history of what you have typed	/help [	]	get information about using the jshell tool	/set editor	start	feedback	mode	prompt	truncation	format ...	set configuration information	/? [	]	get information about using the jshell tool	/!	rerun last snippet -- see /help rerun	/	rerun snippets by ID or ID range -- see /help rerun	/-	rerun n-th previous snippet -- see /help rerun
For more information type '/help' followed by the name of a
command or a subject.
For example '/help /list' or '/help intro'.
Subjects:
intro
an introduction to the jshell tool
keys
a description of readline-like input editing
id
a description of snippet IDs and how use them
shortcuts
a description of keystrokes for snippet and command completion,
information access, and automatic code generation
context
a description of the evaluation context options for /env /reload and /reset
rerun
a description of ways to re-evaluate previously entered snippets

jshell> /list

1 : "NgMunOnn" 2 : "Universiti Utara Malaysia" 3 : "NgMunOnn#tag" 4 : String name ="NgMunOnn"; 5 : String $name ="SOC"; 6 : $1==$2 7 : $1+$2 8 : 19+18 9 : int age =21; 10 : double price =50.99; 11 : age + price 12 : age > price 13 : age!=price

jshell> /vars | String $1 = "NgMunOnn" | String $2 = "Universiti Utara Malaysia" | String $3 = "NgMunOnn#tag" | String name = "NgMunOnn" | String $name = "SOC" | boolean $6 = false | String $7 = "NgMunOnnUniversiti Utara Malaysia" | int $8 = 37 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> public static void main(String[]args){ ...> System.out.println("HelloWorld"); ...> } | Warning: | Modifier 'static' not permitted in top-level declarations, ignored | public static void main(String[]args){ | ^-----------^ | created method main(String[])

jshell> public void main(){ ...> System.out.println("HelloWorld"); ...> } | created method main()

jshell> /list

1 : "NgMunOnn" 2 : "Universiti Utara Malaysia" 3 : "NgMunOnn#tag" 4 : String name ="NgMunOnn"; 5 : String $name ="SOC"; 6 : $1==$2 7 : $1+$2 8 : 19+18 9 : int age =21; 10 : double price =50.99; 11 : age + price 12 : age > price 13 : age!=price 14 : public static void main(String[]args){ System.out.println("HelloWorld"); } 15 : public void main(){ System.out.println("HelloWorld"); }

jshell> /vars | String $1 = "NgMunOnn" | String $2 = "Universiti Utara Malaysia" | String $3 = "NgMunOnn#tag" | String name = "NgMunOnn" | String $name = "SOC" | boolean $6 = false | String $7 = "NgMunOnnUniversiti Utara Malaysia" | int $8 = 37 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> /method | void main(String[]) | void main()

jshell> /list

1 : "NgMunOnn" 2 : "Universiti Utara Malaysia" 3 : "NgMunOnn#tag" 4 : String name ="NgMunOnn"; 5 : String $name ="SOC"; 6 : $1==$2 7 : $1+$2 8 : 19+18 9 : int age =21; 10 : double price =50.99; 11 : age + price 12 : age > price 13 : age!=price 14 : public static void main(String[]args){ System.out.println("HelloWorld"); } 15 : public void main(){ System.out.println("HelloWorld"); }

jshell> /edit 15 | modified method main() | update overwrote method main()

jshell> /list

1 : "NgMunOnn" 2 : "Universiti Utara Malaysia" 3 : "NgMunOnn#tag" 4 : String name ="NgMunOnn"; 5 : String $name ="SOC"; 6 : $1==$2 7 : $1+$2 8 : 19+18 9 : int age =21; 10 : double price =50.99; 11 : age + price 12 : age > price 13 : age!=price 14 : public static void main(String[]args){ System.out.println("HelloWorld"); } 16 : public void main(){ System.out.println("Kampar,Perak"); }

jshell> /edit 2

jshell> /list

1 : "NgMunOnn" 2 : "Universiti Utara Malaysia" 3 : "NgMunOnn#tag" 4 : String name ="NgMunOnn"; 5 : String $name ="SOC"; 6 : $1==$2 7 : $1+$2 8 : 19+18 9 : int age =21; 10 : double price =50.99; 11 : age + price 12 : age > price 13 : age!=price 14 : public static void main(String[]args){ System.out.println("HelloWorld"); } 16 : public void main(){ System.out.println("Kampar,Perak"); }

[sakinamhza]

(c) 2018 Microsoft Corporation. All rights reserved.

C:\Users\User>java -version
java version "1.8.0_171"
Java(TM) SE Runtime Environment (build 1.8.0_171-b11)
Java HotSpot(TM) Client VM (build 25.171-b11, mixed mode, sharing)

C:\Users\User>jshell
|  Welcome to JShell -- Version 12.0.2
|  For an introduction type: /help intro

jshell> "elin"
$1 ==> "elin"

jshell> /exit
|  Goodbye

C:\Users\User>jshell -v
|  Welcome to JShell -- Version 12.0.2
|  For an introduction type: /help intro

jshell> "elin"
$1 ==> "elin"
|  created scratch variable $1 : String

jshell> /vars
|    String $1 = "elin"

jshell> "elin#tag"
$2 ==> "elin#tag"
|  created scratch variable $2 : String

jshell> /vars
|    String $1 = "elin"
|    String $2 = "elin#tag"

jshell> String name = "elin"
name ==> "elin"
|  created variable name : String

jshell> String $name = "SOC"
$name ==> "SOC"
|  created variable $name : String

jshell> /vars
|    String $1 = "elin"
|    String $2 = "elin#tag"
|    String name = "elin"
|    String $name = "SOC"

jshell> $1==$2
$5 ==> false
|  created scratch variable $5 : boolean

jshell> 7+8
$6 ==> 15
|  created scratch variable $6 : int

jshell> int age = 21
age ==> 21
|  created variable age : int

jshell> /vars
|    String $1 = "elin"
|    String $2 = "elin#tag"
|    String name = "elin"
|    String $name = "SOC"
|    boolean $5 = false
|    int $6 = 15
|    int age = 21

jshell> int price = 50.99
|  Error:
|  incompatible types: possible lossy conversion from double to int
|  int price = 50.99;
|              ^---^

jshell> double price = 50.99
price ==> 50.99
|  created variable price : double

jshell> vars
|  Error:
|  cannot find symbol
|    symbol:   variable vars
|  vars
|  ^--^

jshell> /vars
|    String $1 = "elin"
|    String $2 = "elin#tag"
|    String name = "elin"
|    String $name = "SOC"
|    boolean $5 = false
|    int $6 = 15
|    int age = 21
|    double price = 50.99

jshell> age + price
$9 ==> 71.99000000000001
|  created scratch variable $9 : double

jshell> age
age ==> 21
|  value of age : int

jshell> age>price
$11 ==> false
|  created scratch variable $11 : boolean

jshell> age! = price
|  Error:
|  ';' expected
|  age! = price
|     ^
|  Error:
|  not a statement
|  age! = price
|         ^---^

jshell> /vars
|    String $1 = "elin"
|    String $2 = "elin#tag"
|    String name = "elin"
|    String $name = "SOC"
|    boolean $5 = false
|    int $6 = 15
|    int age = 21
|    double price = 50.99
|    double $9 = 71.99000000000001
|    boolean $11 = false

jshell> /help
|  Type a Java language expression, statement, or declaration.
|  Or type one of the following commands:
|  /list [<name or id>|-all|-start]
|       list the source you have typed
|  /edit <name or id>
|       edit a source entry
|  /drop <name or id>
|       delete a source entry
|  /save [-all|-history|-start] <file>
|       Save snippet source to a file
|  /open <file>
|       open a file as source input
|  /vars [<name or id>|-all|-start]
|       list the declared variables and their values
|  /methods [<name or id>|-all|-start]
|       list the declared methods and their signatures
|  /types [<name or id>|-all|-start]
|       list the type declarations
|  /imports
|       list the imported items
|  /exit [<integer-expression-snippet>]
|       exit the jshell tool
|  /env [-class-path <path>] [-module-path <path>] [-add-modules <modules>] ...
|       view or change the evaluation context
|  /reset [-class-path <path>] [-module-path <path>] [-add-modules <modules>]...
|       reset the jshell tool
|  /reload [-restore] [-quiet] [-class-path <path>] [-module-path <path>]...
|       reset and replay relevant history -- current or previous (-restore)
|  /history [-all]
|       history of what you have typed
|  /help [<command>|<subject>]
|       get information about using the jshell tool
|  /set editor|start|feedback|mode|prompt|truncation|format ...
|       set configuration information
|  /? [<command>|<subject>]
|       get information about using the jshell tool
|  /!
|       rerun last snippet -- see /help rerun
|  /<id>
|       rerun snippets by ID or ID range -- see /help rerun
|  /-<n>
|       rerun n-th previous snippet -- see /help rerun
|
|  For more information type '/help' followed by the name of a
|  command or a subject.
|  For example '/help /list' or '/help intro'.
|
|  Subjects:
|
|  intro
|       an introduction to the jshell tool
|  keys
|       a description of readline-like input editing
|  id
|       a description of snippet IDs and how use them
|  shortcuts
|       a description of keystrokes for snippet and command completion,
|       information access, and automatic code generation
|  context
|       a description of the evaluation context options for /env /reload and /reset
|  rerun
|       a description of ways to re-evaluate previously entered snippets

jshell> /list

   1 : "elin"
   2 : "elin#tag"
   3 : String name = "elin";
   4 : String $name = "SOC";
   5 : $1==$2
   6 : 7+8
   7 : int age = 21;
   8 : double price = 50.99;
   9 : age + price
  10 : age
  11 : age>price

jshell> /vars
|    String $1 = "elin"
|    String $2 = "elin#tag"
|    String name = "elin"
|    String $name = "SOC"
|    boolean $5 = false
|    int $6 = 15
|    int age = 21
|    double price = 50.99
|    double $9 = 71.99000000000001
|    boolean $11 = false

jshell> public static void main (String[] args){
   ...> system.out.println("helloworld");
   ...> }
|  Error:
|  package system does not exist
|  system.out.println("helloworld");
|  ^--------^
|  Warning:
|  Modifier 'static'  not permitted in top-level declarations, ignored
|  public static void main (String[] args){
|  ^-----------^

jshell> public void main(){
   ...> System.out.println("helloworld");
   ...> }
|  created method main()

jshell> /list

   1 : "elin"
   2 : "elin#tag"
   3 : String name = "elin";
   4 : String $name = "SOC";
   5 : $1==$2
   6 : 7+8
   7 : int age = 21;
   8 : double price = 50.99;
   9 : age + price
  10 : age
  11 : age>price
  12 : public void main(){
       System.out.println("helloworld");
       }

jshell> /vars
|    String $1 = "elin"
|    String $2 = "elin#tag"
|    String name = "elin"
|    String $name = "SOC"
|    boolean $5 = false
|    int $6 = 15
|    int age = 21
|    double price = 50.99
|    double $9 = 71.99000000000001
|    boolean $11 = false

jshell> /methods
|    void main()

jshell> edit 14
|  Error:
|  ';' expected
|  edit 14
|      ^
|  Error:
|  cannot find symbol
|    symbol:   variable edit
|  edit 14
|  ^--^

jshell> /list

   1 : "elin"
   2 : "elin#tag"
   3 : String name = "elin";
   4 : String $name = "SOC";
   5 : $1==$2
   6 : 7+8
   7 : int age = 21;
   8 : double price = 50.99;
   9 : age + price
  10 : age
  11 : age>price
  12 : public void main(){
       System.out.println("helloworld");
       }

jshell> /edit 2

jshell>

[gohfangyao]

Microsoft Windows [Version 10.0.18362.356] (c) 2019 Microsoft Corporation. All rights reserved.

C:\Users\User>jshell | Welcome to JShell -- Version 12.0.2 | For an introduction type: /help intro

jshell> Goh Fang Yao | Error: | ';' expected | Goh Fang Yao; | ^

jshell> "Goh Fang Yao" $1 ==> "Goh Fang Yao"

jshell> /exit | Goodbye

C:\Users\User>jshell -v | Welcome to JShell -- Version 12.0.2 | For an introduction type: /help intro

jshell> Goh Fang Yao" | Error: | ';' expected | Goh Fang Yao" | ^

jshell> "Goh Fang Yao" $1 ==> "Goh Fang Yao" | created scratch variable $1 : String

jshell> "Universiti Utara Malaysia" $2 ==> "Universiti Utara Malaysia" | created scratch variable $2 : String

jshell> "GohFangYao#tag" $3 ==> "GohFangYao#tag" | created scratch variable $3 : String

jshell> 'Goh Fang Yao' | Error: | unclosed character literal | 'Goh Fang Yao' | ^ | Error: | unclosed character literal | 'Goh Fang Yao' | ^

jshell> /vars | String $1 = "Goh Fang Yao" | String $2 = "Universiti Utara Malaysia" | String $3 = "GohFangYao#tag"

jshell> String name="Goh Fang Yao" name ==> "Goh Fang Yao" | created variable name : String

jshell> String $name= "SOC" $name ==> "SOC" | created variable $name : String

jshell> /vars | String $1 = "Goh Fang Yao" | String $2 = "Universiti Utara Malaysia" | String $3 = "GohFangYao#tag" | String name = "Goh Fang Yao" | String $name = "SOC"

jshell> $1==$2 $6 ==> false | created scratch variable $6 : boolean

jshell> $1+$2 $7 ==> "Goh Fang YaoUniversiti Utara Malaysia" | created scratch variable $7 : String

jshell> $1<$2 | Error: | bad operand types for binary operator '<' | first type: java.lang.String | second type: java.lang.String | $1<$2 | ^---^

jshell> 7+8 $8 ==> 15 | created scratch variable $8 : int

jshell> int age=21 age ==> 21 | created variable age : int

jshell> /vars | String $1 = "Goh Fang Yao" | String $2 = "Universiti Utara Malaysia" | String $3 = "GohFangYao#tag" | String name = "Goh Fang Yao" | String $name = "SOC" | boolean $6 = false | String $7 = "Goh Fang YaoUniversiti Utara Malaysia" | int $8 = 15 | int age = 21

jshell> int price=50.99 | Error: | incompatible types: possible lossy conversion from double to int | int price=50.99; | ^---^

jshell> double price=50.99 price ==> 50.99 | created variable price : double

jshell> age+price $11 ==> 71.99000000000001 | created scratch variable $11 : double

jshell> age>price $12 ==> false | created scratch variable $12 : boolean

jshell> age!=price $13 ==> true | created scratch variable $13 : boolean

jshell> /vars | String $1 = "Goh Fang Yao" | String $2 = "Universiti Utara Malaysia" | String $3 = "GohFangYao#tag" | String name = "Goh Fang Yao" | String $name = "SOC" | boolean $6 = false | String $7 = "Goh Fang YaoUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> /help	Type a Java language expression, statement, or declaration.	Or type one of the following commands:	/list [	-all	-start]	list the source you have typed	/edit	edit a source entry	/drop	delete a source entry	/save [-all	-history	-start]	Save snippet source to a file	/open	open a file as source input	/vars [	-all	-start]	list the declared variables and their values	/methods [	-all	-start]	list the declared methods and their signatures	/types [	-all	-start]	list the type declarations	/imports	list the imported items	/exit []	exit the jshell tool	/env [-class-path ] [-module-path ] [-add-modules ] ...	view or change the evaluation context	/reset [-class-path ] [-module-path ] [-add-modules ]...	reset the jshell tool	/reload [-restore] [-quiet] [-class-path ] [-module-path ]...	reset and replay relevant history -- current or previous (-restore)	/history [-all]	history of what you have typed	/help [	]	get information about using the jshell tool	/set editor	start	feedback	mode	prompt	truncation	format ...	set configuration information	/? [	]	get information about using the jshell tool	/!	rerun last snippet -- see /help rerun	/	rerun snippets by ID or ID range -- see /help rerun	/-	rerun n-th previous snippet -- see /help rerun
For more information type '/help' followed by the name of a
command or a subject.
For example '/help /list' or '/help intro'.
Subjects:
intro
an introduction to the jshell tool
keys
a description of readline-like input editing
id
a description of snippet IDs and how use them
shortcuts
a description of keystrokes for snippet and command completion,
information access, and automatic code generation
context
a description of the evaluation context options for /env /reload and /reset
rerun
a description of ways to re-evaluate previously entered snippets

jshell> /list

1 : "Goh Fang Yao" 2 : "Universiti Utara Malaysia" 3 : "GohFangYao#tag" 4 : String name="Goh Fang Yao"; 5 : String $name= "SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age=21; 10 : double price=50.99; 11 : age+price 12 : age>price 13 : age!=price

jshell> /vars | String $1 = "Goh Fang Yao" | String $2 = "Universiti Utara Malaysia" | String $3 = "GohFangYao#tag" | String name = "Goh Fang Yao" | String $name = "SOC" | boolean $6 = false | String $7 = "Goh Fang YaoUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> public static void main(String[]args){ ...> System.out.println("Hello World"); ...> } | Warning: | Modifier 'static' not permitted in top-level declarations, ignored | public static void main(String[]args){ | ^-----------^ | created method main(String[])

jshell> public void main(String[]) ...> System.out.println("Hello World"); | Error: | expected | public void main(String[]) | ^ | Error: | ';' expected | public void main(String[]) | ^

jshell> public void main(String[]args){ ...> System.out.println("Hello World"); ...> } | modified method main(String[]) | update overwrote method main(String[])

jshell> /list

1 : "Goh Fang Yao" 2 : "Universiti Utara Malaysia" 3 : "GohFangYao#tag" 4 : String name="Goh Fang Yao"; 5 : String $name= "SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age=21; 10 : double price=50.99; 11 : age+price 12 : age>price 13 : age!=price 15 : public void main(String[]args){ System.out.println("Hello World"); }

jshell> /vars | String $1 = "Goh Fang Yao" | String $2 = "Universiti Utara Malaysia" | String $3 = "GohFangYao#tag" | String name = "Goh Fang Yao" | String $name = "SOC" | boolean $6 = false | String $7 = "Goh Fang YaoUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> /methods | void main(String[])

jshell> /list

1 : "Goh Fang Yao" 2 : "Universiti Utara Malaysia" 3 : "GohFangYao#tag" 4 : String name="Goh Fang Yao"; 5 : String $name= "SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age=21; 10 : double price=50.99; 11 : age+price 12 : age>price 13 : age!=price 15 : public void main(String[]args){ System.out.println("Hello World"); }

jshell> /edit 15

jshell> /list

1 : "Goh Fang Yao" 2 : "Universiti Utara Malaysia" 3 : "GohFangYao#tag" 4 : String name="Goh Fang Yao"; 5 : String $name= "SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age=21; 10 : double price=50.99; 11 : age+price 12 : age>price 13 : age!=price 15 : public void main(String[]args){ System.out.println("Hello World"); }

jshell> /edit 15 | modified method main(String[]) | update overwrote method main(String[])

jshell> /list

1 : "Goh Fang Yao" 2 : "Universiti Utara Malaysia" 3 : "GohFangYao#tag" 4 : String name="Goh Fang Yao"; 5 : String $name= "SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age=21; 10 : double price=50.99; 11 : age+price 12 : age>price 13 : age!=price 16 : public void main(String[]args){ System.out.println("Hello Goh Fang Yao UUM"); }

[LeeXiuNiang]

Microsoft Windows [Version 10.0.17763.737] (c) 2018 Microsoft Corporation. All rights reserved.

C:\Users\Admin>jshell | Welcome to JShell -- Version 12.0.2 | For an introduction type: /help intro

jshell> xiuniang | Error: | cannot find symbol | symbol: variable xiuniang | xiuniang | ^------^

jshell> "xiuniang" $1 ==> "xiuniang"

jshell> /exit | Goodbye

C:\Users\Admin>jshell -v | Welcome to JShell -- Version 12.0.2 | For an introduction type: /help intro

jshell> xiuniang | Error: | cannot find symbol | symbol: variable xiuniang | xiuniang | ^------^

jshell> "xiuniang" $1 ==> "xiuniang" | created scratch variable $1 : String

jshell> "Universiti Utara Malaysia" $2 ==> "Universiti Utara Malaysia" | created scratch variable $2 : String

jshell> "xiuniang#tag" $3 ==> "xiuniang#tag" | created scratch variable $3 : String

jshell> /vars | String $1 = "xiuniang" | String $2 = "Universiti Utara Malaysia" | String $3 = "xiuniang#tag"

jshell> String name = "lee xiu niang" name ==> "lee xiu niang" | created variable name : String

jshell> String $name = "SOC" $name ==> "SOC" | created variable $name : String

jshell> /vars | String $1 = "xiuniang" | String $2 = "Universiti Utara Malaysia" | String $3 = "xiuniang#tag" | String name = "lee xiu niang" | String $name = "SOC"

jshell> $1==$2 $6 ==> false | created scratch variable $6 : boolean

jshell> $1 + $2 $7 ==> "xiuniangUniversiti Utara Malaysia" | created scratch variable $7 : String

jshell> 7+8 $8 ==> 15 | created scratch variable $8 : int

jshell> int age = 21 age ==> 21 | created variable age : int

jshell> double price = 50.99 price ==> 50.99 | created variable price : double

jshell> /vars | String $1 = "xiuniang" | String $2 = "Universiti Utara Malaysia" | String $3 = "xiuniang#tag" | String name = "lee xiu niang" | String $name = "SOC" | boolean $6 = false | String $7 = "xiuniangUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99

jshell> age + price $11 ==> 71.99000000000001 | created scratch variable $11 : double

jshell> age > price $12 ==> false | created scratch variable $12 : boolean

jshell> age != price $13 ==> true | created scratch variable $13 : boolean

jshell> /vars | String $1 = "xiuniang" | String $2 = "Universiti Utara Malaysia" | String $3 = "xiuniang#tag" | String name = "lee xiu niang" | String $name = "SOC" | boolean $6 = false | String $7 = "xiuniangUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> /help	Type a Java language expression, statement, or declaration.	Or type one of the following commands:	/list [	-all	-start]	list the source you have typed	/edit	edit a source entry	/drop	delete a source entry	/save [-all	-history	-start]	Save snippet source to a file	/open	open a file as source input	/vars [	-all	-start]	list the declared variables and their values	/methods [	-all	-start]	list the declared methods and their signatures	/types [	-all	-start]	list the type declarations	/imports	list the imported items	/exit []	exit the jshell tool	/env [-class-path ] [-module-path ] [-add-modules ] ...	view or change the evaluation context	/reset [-class-path ] [-module-path ] [-add-modules ]...	reset the jshell tool	/reload [-restore] [-quiet] [-class-path ] [-module-path ]...	reset and replay relevant history -- current or previous (-restore)	/history [-all]	history of what you have typed	/help [	]	get information about using the jshell tool	/set editor	start	feedback	mode	prompt	truncation	format ...	set configuration information	/? [	]	get information about using the jshell tool	/!	rerun last snippet -- see /help rerun	/	rerun snippets by ID or ID range -- see /help rerun	/-	rerun n-th previous snippet -- see /help rerun
For more information type '/help' followed by the name of a
command or a subject.
For example '/help /list' or '/help intro'.
Subjects:
intro
an introduction to the jshell tool
keys
a description of readline-like input editing
id
a description of snippet IDs and how use them
shortcuts
a description of keystrokes for snippet and command completion,
information access, and automatic code generation
context
a description of the evaluation context options for /env /reload and /reset
rerun
a description of ways to re-evaluate previously entered snippets

jshell> /list

1 : "xiuniang" 2 : "Universiti Utara Malaysia" 3 : "xiuniang#tag" 4 : String name = "lee xiu niang"; 5 : String $name = "SOC"; 6 : $1==$2 7 : $1 + $2 8 : 7+8 9 : int age = 21; 10 : double price = 50.99; 11 : age + price 12 : age > price 13 : age != price

jshell> /vars | String $1 = "xiuniang" | String $2 = "Universiti Utara Malaysia" | String $3 = "xiuniang#tag" | String name = "lee xiu niang" | String $name = "SOC" | boolean $6 = false | String $7 = "xiuniangUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> public static void main(String[] args){ ...> System.out.println("Hello World"); ...> } | Warning: | Modifier 'static' not permitted in top-level declarations, ignored | public static void main(String[] args){ | ^-----------^ | created method main(String[])

jshell> public void main(String[] args){ ...> System.out.println("Hello World"); ...> } | modified method main(String[]) | update overwrote method main(String[])

jshell> /list

1 : "xiuniang" 2 : "Universiti Utara Malaysia" 3 : "xiuniang#tag" 4 : String name = "lee xiu niang"; 5 : String $name = "SOC"; 6 : $1==$2 7 : $1 + $2 8 : 7+8 9 : int age = 21; 10 : double price = 50.99; 11 : age + price 12 : age > price 13 : age != price 15 : public void main(String[] args){ System.out.println("Hello World"); }

jshell> /vars | String $1 = "xiuniang" | String $2 = "Universiti Utara Malaysia" | String $3 = "xiuniang#tag" | String name = "lee xiu niang" | String $name = "SOC" | boolean $6 = false | String $7 = "xiuniangUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> /methods | void main(String[])

jshell> /edit 15 | modified method main(String[]) | update overwrote method main(String[])

jshell> /list

1 : "xiuniang" 2 : "Universiti Utara Malaysia" 3 : "xiuniang#tag" 4 : String name = "lee xiu niang"; 5 : String $name = "SOC"; 6 : $1==$2 7 : $1 + $2 8 : 7+8 9 : int age = 21; 10 : double price = 50.99; 11 : age + price 12 : age > price 13 : age != price 16 : public void main(String[] args){ System.out.println("Hello UUM"); }

[ngshenmeng2401]

Microsoft Windows [Version 10.0.18362.356] (c) 2019 Microsoft Corporation. All rights reserved.

C:\Users\HP>jshell | Welcome to JShell -- Version 13-ea | For an introduction type: /help intro

jshell> shenmeng | Error: | cannot find symbol | symbol: variable shenmeng | shenmeng | ^------^

jshell> "shenmeng" $1 ==> "shenmeng"

jshell> /exit | Goodbye

C:\Users\HP>jshell -v | Welcome to JShell -- Version 13-ea | For an introduction type: /help intro

jshell> ngshenmeng | Error: | cannot find symbol | symbol: variable ngshenmeng | ngshenmeng | ^--------^

jshell> "ngshenmeng" $1 ==> "ngshenmeng" | created scratch variable $1 : String

jshell> "Universiti Utara Malaysia" $2 ==> "Universiti Utara Malaysia" | created scratch variable $2 : String

jshell> "ngshenmeng#tag" $3 ==> "ngshenmeng#tag" | created scratch variable $3 : String

jshell> 'ngshenmeng' | Error: | unclosed character literal | 'ngshenmeng' | ^ | Error: | unclosed character literal | 'ngshenmeng' | ^ | Error: | reached end of file while parsing | 'ngshenmeng' | ^

jshell> /vars | String $1 = "ngshenmeng" | String $2 = "Universiti Utara Malaysia" | String $3 = "ngshenmeng#tag"

jshell> String $name= "Ng Shen Meng" $name ==> "Ng Shen Meng" | created variable $name : String

jshell> String $name= "SOC" $name ==> "SOC" | modified variable $name : String | update overwrote variable $name : String

jshell> $1==$2 $6 ==> false | created scratch variable $6 : boolean

jshell> $1+$2 $7 ==> "ngshenmengUniversiti Utara Malaysia" | created scratch variable $7 : String

jshell> $1<$2 | Error: | bad operand types for binary operator '<' | first type: java.lang.String | second type: java.lang.String | $1<$2 | ^---^

jshell> 7+8 $8 ==> 15 | created scratch variable $8 : int

jshell> int age= 21 age ==> 21 | created variable age : int

jshell> /vars | String $1 = "ngshenmeng" | String $2 = "Universiti Utara Malaysia" | String $3 = "ngshenmeng#tag" | String $name = "SOC" | boolean $6 = false | String $7 = "ngshenmengUniversiti Utara Malaysia" | int $8 = 15 | int age = 21

jshell> int price= 50.99 | Error: | incompatible types: possible lossy conversion from double to int | int price= 50.99; | ^---^

jshell> double price= 50.99 price ==> 50.99 | created variable price : double

jshell> age + price $11 ==> 71.99000000000001 | created scratch variable $11 : double

jshell> age!=price $12 ==> true | created scratch variable $12 : boolean

jshell> age>price $13 ==> false | created scratch variable $13 : boolean

jshell> /vars | String $1 = "ngshenmeng" | String $2 = "Universiti Utara Malaysia" | String $3 = "ngshenmeng#tag" | String $name = "SOC" | boolean $6 = false | String $7 = "ngshenmengUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = true | boolean $13 = false

jshell> /help	Type a Java language expression, statement, or declaration.	Or type one of the following commands:	/list [	-all	-start]	list the source you have typed	/edit	edit a source entry	/drop	delete a source entry	/save [-all	-history	-start]	Save snippet source to a file	/open	open a file as source input	/vars [	-all	-start]	list the declared variables and their values	/methods [	-all	-start]	list the declared methods and their signatures	/types [	-all	-start]	list the type declarations	/imports	list the imported items	/exit []	exit the jshell tool	/env [-class-path ] [-module-path ] [-add-modules ] ...	view or change the evaluation context	/reset [-class-path ] [-module-path ] [-add-modules ]...	reset the jshell tool	/reload [-restore] [-quiet] [-class-path ] [-module-path ]...	reset and replay relevant history -- current or previous (-restore)	/history [-all]	history of what you have typed	/help [	]	get information about using the jshell tool	/set editor	start	feedback	mode	prompt	truncation	format ...	set configuration information	/? [	]	get information about using the jshell tool	/!	rerun last snippet -- see /help rerun	/	rerun snippets by ID or ID range -- see /help rerun	/-	rerun n-th previous snippet -- see /help rerun
For more information type '/help' followed by the name of a
command or a subject.
For example '/help /list' or '/help intro'.
Subjects:
intro
an introduction to the jshell tool
keys
a description of readline-like input editing
id
a description of snippet IDs and how use them
shortcuts
a description of keystrokes for snippet and command completion,
information access, and automatic code generation
context
a description of the evaluation context options for /env /reload and /reset
rerun
a description of ways to re-evaluate previously entered snippets

jshell> /list

1 : "ngshenmeng" 2 : "Universiti Utara Malaysia" 3 : "ngshenmeng#tag" 5 : String $name= "SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age= 21; 10 : double price= 50.99; 11 : age + price 12 : age!=price 13 : age>price

jshell> /vars | String $1 = "ngshenmeng" | String $2 = "Universiti Utara Malaysia" | String $3 = "ngshenmeng#tag" | String $name = "SOC" | boolean $6 = false | String $7 = "ngshenmengUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = true | boolean $13 = false

jshell> public static void main(String[] args){ ...> System.out.println("Hello World"); ...> } | Warning: | Modifier 'static' not permitted in top-level declarations, ignored | public static void main(String[] args){ | ^-----------^ | created method main(String[])

jshell> public void main(String[] args){ ...> System.out.println("Hello World"); ...> } | modified method main(String[]) | update overwrote method main(String[])

jshell> /list

1 : "ngshenmeng" 2 : "Universiti Utara Malaysia" 3 : "ngshenmeng#tag" 5 : String $name= "SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age= 21; 10 : double price= 50.99; 11 : age + price 12 : age!=price 13 : age>price 15 : public void main(String[] args){ System.out.println("Hello World"); }

jshell> /vars | String $1 = "ngshenmeng" | String $2 = "Universiti Utara Malaysia" | String $3 = "ngshenmeng#tag" | String $name = "SOC" | boolean $6 = false | String $7 = "ngshenmengUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = true | boolean $13 = false

jshell> /methods | void main(String[])

jshell> /list

1 : "ngshenmeng" 2 : "Universiti Utara Malaysia" 3 : "ngshenmeng#tag" 5 : String $name= "SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age= 21; 10 : double price= 50.99; 11 : age + price 12 : age!=price 13 : age>price 15 : public void main(String[] args){ System.out.println("Hello World"); }

jshell> /edit 15

jshell> /list

1 : "ngshenmeng" 2 : "Universiti Utara Malaysia" 3 : "ngshenmeng#tag" 5 : String $name= "SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age= 21; 10 : double price= 50.99; 11 : age + price 12 : age!=price 13 : age>price 15 : public void main(String[] args){ System.out.println("Hello World"); }

jshell> /edit 2

jshell> /edit 15 | modified method main(String[]) | update overwrote method main(String[])

jshell> /list

1 : "ngshenmeng" 2 : "Universiti Utara Malaysia" 3 : "ngshenmeng#tag" 5 : String $name= "SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age= 21; 10 : double price= 50.99; 11 : age + price 12 : age!=price 13 : age>price 16 : public void main(String[] args){ System.out.println("Hello Ng Shen Meng UUM"); }

[tanguosheng1999]

Microsoft Windows [Version 10.0.18362.356] (c) 2019 Microsoft Corporation. All rights reserved.

C:\Users\User>jshell | Welcome to JShell -- Version 13 | For an introduction type: /help intro

jshell> guosheng | Error: | cannot find symbol | symbol: variable guosheng | guosheng | ^------^

jshell> "guosheng" $1 ==> "guosheng"

jshell> /exit | Goodbye

C:\Users\User>jshell -v | Welcome to JShell -- Version 13 | For an introduction type: /help intro

jshell> guosheng | Error: | cannot find symbol | symbol: variable guosheng | guosheng | ^------^

jshell> "guosheng" $1 ==> "guosheng" | created scratch variable $1 : String

jshell> "Universiti Utara Malaysia" $2 ==> "Universiti Utara Malaysia" | created scratch variable $2 : String

jshell> "guosheng#tag" $3 ==> "guosheng#tag" | created scratch variable $3 : String

jshell> 'guosheng' | Error: | unclosed character literal | 'guosheng' | ^ | Error: | unclosed character literal | 'guosheng' | ^ | Error: | reached end of file while parsing | 'guosheng' | ^

jshell> /vars | String $1 = "guosheng" | String $2 = "Universiti Utara Malaysia" | String $3 = "guosheng#tag"

jshell> String $name= "Guo Sheng" $name ==> "Guo Sheng" | created variable $name : String

jshell> String $name="SOC" $name ==> "SOC" | modified variable $name : String | update overwrote variable $name : String

jshell> $1==$2 $6 ==> false | created scratch variable $6 : boolean

jshell> $1+$2 $7 ==> "guoshengUniversiti Utara Malaysia" | created scratch variable $7 : String

jshell> $1<$2 | Error: | bad operand types for binary operator '<' | first type: java.lang.String | second type: java.lang.String | $1<$2 | ^---^

jshell> 7+8 $8 ==> 15 | created scratch variable $8 : int

jshell> <press tab again to see all possible completions; total possible completions: 546> jshell> int age=21 age ==> 21 | created variable age : int

jshell> /vars | String $1 = "guosheng" | String $2 = "Universiti Utara Malaysia" | String $3 = "guosheng#tag" | String $name = "SOC" | boolean $6 = false | String $7 = "guoshengUniversiti Utara Malaysia" | int $8 = 15 | int age = 21

jshell> int price=50.99 | Error: | incompatible types: possible lossy conversion from double to int | int price=50.99; | ^---^

jshell> double price=50.99 price ==> 50.99 | created variable price : double

jshell> age + price $11 ==> 71.99000000000001 | created scratch variable $11 : double

jshell> age!=price $12 ==> true | created scratch variable $12 : boolean

jshell> age>price $13 ==> false | created scratch variable $13 : boolean

jshell> /vars | String $1 = "guosheng" | String $2 = "Universiti Utara Malaysia" | String $3 = "guosheng#tag" | String $name = "SOC" | boolean $6 = false | String $7 = "guoshengUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = true | boolean $13 = false

jshell> /help	Type a Java language expression, statement, or declaration.	Or type one of the following commands:	/list [	-all	-start]	list the source you have typed	/edit	edit a source entry	/drop	delete a source entry	/save [-all	-history	-start]	Save snippet source to a file	/open	open a file as source input	/vars [	-all	-start]	list the declared variables and their values	/methods [	-all	-start]	list the declared methods and their signatures	/types [	-all	-start]	list the type declarations	/imports	list the imported items	/exit []	exit the jshell tool	/env [-class-path ] [-module-path ] [-add-modules ] ...	view or change the evaluation context	/reset [-class-path ] [-module-path ] [-add-modules ]...	reset the jshell tool	/reload [-restore] [-quiet] [-class-path ] [-module-path ]...	reset and replay relevant history -- current or previous (-restore)	/history [-all]	history of what you have typed	/help [	]	get information about using the jshell tool	/set editor	start	feedback	mode	prompt	truncation	format ...	set configuration information	/? [	]	get information about using the jshell tool	/!	rerun last snippet -- see /help rerun	/	rerun snippets by ID or ID range -- see /help rerun	/-	rerun n-th previous snippet -- see /help rerun
For more information type '/help' followed by the name of a
command or a subject.
For example '/help /list' or '/help intro'.
Subjects:
intro
an introduction to the jshell tool
keys
a description of readline-like input editing
id
a description of snippet IDs and how use them
shortcuts
a description of keystrokes for snippet and command completion,
information access, and automatic code generation
context
a description of the evaluation context options for /env /reload and /reset
rerun
a description of ways to re-evaluate previously entered snippets

jshell> /list

1 : "guosheng" 2 : "Universiti Utara Malaysia" 3 : "guosheng#tag" 5 : String $name="SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age=21; 10 : double price=50.99; 11 : age + price 12 : age!=price 13 : age>price

jshell> /vars | String $1 = "guosheng" | String $2 = "Universiti Utara Malaysia" | String $3 = "guosheng#tag" | String $name = "SOC" | boolean $6 = false | String $7 = "guoshengUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = true | boolean $13 = false

jshell> public static void main(String[] args){ ...> System.out.println("Hello World"); ...> } | Warning: | Modifier 'static' not permitted in top-level declarations, ignored | public static void main(String[] args){ | ^-----------^ | created method main(String[])

jshell> public void main(String[]){ ...> System.out.println("Hello Word"); ...> } | Error: | expected | public void main(String[]){ | ^

jshell> public void main(String[]args){ ...> System.out.println("Hello Word"); ...> } | modified method main(String[]) | update overwrote method main(String[])

jshell> /list

1 : "guosheng" 2 : "Universiti Utara Malaysia" 3 : "guosheng#tag" 5 : String $name="SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age=21; 10 : double price=50.99; 11 : age + price 12 : age!=price 13 : age>price 15 : public void main(String[]args){ System.out.println("Hello Word"); }

jshell> /vars | String $1 = "guosheng" | String $2 = "Universiti Utara Malaysia" | String $3 = "guosheng#tag" | String $name = "SOC" | boolean $6 = false | String $7 = "guoshengUniversiti Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = true | boolean $13 = false

jshell> /methods | void main(String[])

jshell> /list

1 : "guosheng" 2 : "Universiti Utara Malaysia" 3 : "guosheng#tag" 5 : String $name="SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age=21; 10 : double price=50.99; 11 : age + price 12 : age!=price 13 : age>price 15 : public void main(String[]args){ System.out.println("Hello Word"); }

jshell> /edit 15

jshell> /list

1 : "guosheng" 2 : "Universiti Utara Malaysia" 3 : "guosheng#tag" 5 : String $name="SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age=21; 10 : double price=50.99; 11 : age + price 12 : age!=price 13 : age>price 15 : public void main(String[]args){ System.out.println("Hello Word"); }

jshell> /edit 2

jshell> /edit 15 | modified method main(String[]) | update overwrote method main(String[])

jshell> /list

1 : "guosheng" 2 : "Universiti Utara Malaysia" 3 : "guosheng#tag" 5 : String $name="SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age=21; 10 : double price=50.99; 11 : age + price 12 : age!=price 13 : age>price 16 : public void main(String[]args){ System.out.println("Hello Guo Sheng UUM"); }

[Pyong99]

Microsoft Windows [Version 10.0.17763.737] (c) 2018 Microsoft Corporation. All rights reserved.

C:\Users\User>jshell | Welcome to JShell -- Version 13 | For an introduction type: /help intro

jshell> peckyong | Error: | cannot find symbol | symbol: variable peckyong | peckyong | ^------^

jshell> "peckyong" $1 ==> "peckyong"

jshell> /exit | Goodbye

C:\Users\User>jshell -v | Welcome to JShell -- Version 13 | For an introduction type: /help intro

jshell> "peckyong" $1 ==> "peckyong" | created scratch variable $1 : String

jshell> "University Utara Malaysia" $2 ==> "University Utara Malaysia" | created scratch variable $2 : String

jshell> "peckyong#tag" $3 ==> "peckyong#tag" | created scratch variable $3 : String

jshell> 'peckyong' | Error: | unclosed character literal | 'peckyong' | ^ | Error: | unclosed character literal | 'peckyong' | ^ | Error: | reached end of file while parsing | 'peckyong' | ^

jshell> /vars | String $1 = "peckyong" | String $2 = "University Utara Malaysia" | String $3 = "peckyong#tag"

jshell> String name = "Tey Peck Yong" name ==> "Tey Peck Yong" | created variable name : String

jshell> String $name = "SOC" $name ==> "SOC" | created variable $name : String

jshell> /vars | String $1 = "peckyong" | String $2 = "University Utara Malaysia" | String $3 = "peckyong#tag" | String name = "Tey Peck Yong" | String $name = "SOC"

jshell> $1==$2 $6 ==> false | created scratch variable $6 : boolean

jshell> $1+$2 $7 ==> "peckyongUniversity Utara Malaysia" | created scratch variable $7 : String

jshell> $1<$2 | Error: | bad operand types for binary operator '<' | first type: java.lang.String | second type: java.lang.String | $1<$2 | ^---^

jshell> 7+8 $8 ==> 15 | created scratch variable $8 : int

jshell> int age = 21 age ==> 21 | created variable age : int

jshell> /vars | String $1 = "peckyong" | String $2 = "University Utara Malaysia" | String $3 = "peckyong#tag" | String name = "Tey Peck Yong" | String $name = "SOC" | boolean $6 = false | String $7 = "peckyongUniversity Utara Malaysia" | int $8 = 15 | int age = 21

jshell> int price = 50.99 | Error: | incompatible types: possible lossy conversion from double to int | int price = 50.99; | ^---^

jshell> double price = 50.99 price ==> 50.99 | created variable price : double

jshell> /vars | String $1 = "peckyong" | String $2 = "University Utara Malaysia" | String $3 = "peckyong#tag" | String name = "Tey Peck Yong" | String $name = "SOC" | boolean $6 = false | String $7 = "peckyongUniversity Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99

jshell> age + price $11 ==> 71.99000000000001 | created scratch variable $11 : double

jshell> age > price $12 ==> false | created scratch variable $12 : boolean

jshell> age! = price | Error: | ';' expected | age! = price | ^ | Error: | not a statement | age! = price | ^---^

jshell> age!= price $13 ==> true | created scratch variable $13 : boolean

jshell> /vars | String $1 = "peckyong" | String $2 = "University Utara Malaysia" | String $3 = "peckyong#tag" | String name = "Tey Peck Yong" | String $name = "SOC" | boolean $6 = false | String $7 = "peckyongUniversity Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> /help	Type a Java language expression, statement, or declaration.	Or type one of the following commands:	/list [	-all	-start]	list the source you have typed	/edit	edit a source entry	/drop	delete a source entry	/save [-all	-history	-start]	Save snippet source to a file	/open	open a file as source input	/vars [	-all	-start]	list the declared variables and their values	/methods [	-all	-start]	list the declared methods and their signatures	/types [	-all	-start]	list the type declarations	/imports	list the imported items	/exit []	exit the jshell tool	/env [-class-path ] [-module-path ] [-add-modules ] ...	view or change the evaluation context	/reset [-class-path ] [-module-path ] [-add-modules ]...	reset the jshell tool	/reload [-restore] [-quiet] [-class-path ] [-module-path ]...	reset and replay relevant history -- current or previous (-restore)	/history [-all]	history of what you have typed	/help [	]	get information about using the jshell tool	/set editor	start	feedback	mode	prompt	truncation	format ...	set configuration information	/? [	]	get information about using the jshell tool	/!	rerun last snippet -- see /help rerun	/	rerun snippets by ID or ID range -- see /help rerun	/-	rerun n-th previous snippet -- see /help rerun
For more information type '/help' followed by the name of a
command or a subject.
For example '/help /list' or '/help intro'.
Subjects:
intro
an introduction to the jshell tool
keys
a description of readline-like input editing
id
a description of snippet IDs and how use them
shortcuts
a description of keystrokes for snippet and command completion,
information access, and automatic code generation
context
a description of the evaluation context options for /env /reload and /reset
rerun
a description of ways to re-evaluate previously entered snippets

jshell> /list

1 : "peckyong" 2 : "University Utara Malaysia" 3 : "peckyong#tag" 4 : String name = "Tey Peck Yong"; 5 : String $name = "SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age = 21; 10 : double price = 50.99; 11 : age + price 12 : age > price 13 : age!= price

jshell> /vars | String $1 = "peckyong" | String $2 = "University Utara Malaysia" | String $3 = "peckyong#tag" | String name = "Tey Peck Yong" | String $name = "SOC" | boolean $6 = false | String $7 = "peckyongUniversity Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> public static void main(String[]args){ ...> System.out.println("Hello World");} | Warning: | Modifier 'static' not permitted in top-level declarations, ignored | public static void main(String[]args){ | ^-----------^ | created method main(String[])

jshell> public void main(){ ...> System.out.println("Hello World");} | created method main()

jshell> /list

1 : "peckyong" 2 : "University Utara Malaysia" 3 : "peckyong#tag" 4 : String name = "Tey Peck Yong"; 5 : String $name = "SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age = 21; 10 : double price = 50.99; 11 : age + price 12 : age > price 13 : age!= price 14 : public static void main(String[]args){ System.out.println("Hello World");} 15 : public void main(){ System.out.println("Hello World");}

jshell> /vars | String $1 = "peckyong" | String $2 = "University Utara Malaysia" | String $3 = "peckyong#tag" | String name = "Tey Peck Yong" | String $name = "SOC" | boolean $6 = false | String $7 = "peckyongUniversity Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> /method | void main(String[]) | void main()

jshell> /edit 15 | modified method main() | update overwrote method main()

jshell> /list

1 : "peckyong" 2 : "University Utara Malaysia" 3 : "peckyong#tag" 4 : String name = "Tey Peck Yong"; 5 : String $name = "SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age = 21; 10 : double price = 50.99; 11 : age + price 12 : age > price 13 : age!= price 14 : public static void main(String[]args){ System.out.println("Hello World");} 16 : public void main(){ System.out.println("Hello peckyong");}

jshell> /edit 2

jshell> /list

1 : "peckyong" 2 : "University Utara Malaysia" 3 : "peckyong#tag" 4 : String name = "Tey Peck Yong"; 5 : String $name = "SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age = 21; 10 : double price = 50.99; 11 : age + price 12 : age > price 13 : age!= price 14 : public static void main(String[]args){ System.out.println("Hello World");} 16 : public void main(){ System.out.println("Hello peckyong");}

jshell>

[nadnadia25]

Microsoft Windows [Version 10.0.17763.737] (c) 2018 Microsoft Corporation. All rights reserved.

C:\Users\HP>jshell | Welcome to JShell -- Version 13 | For an introduction type: /help intro

jshell> "nadiah" $1 ==> "nadiah"

jshell> "kuala terengganu darul iman" $2 ==> "kuala terengganu darul iman"

jshell> "nadiah#tag" $3 ==> "nadiah#tag"

jshell> /vars | String $1 = "nadiah" | String $2 = "kuala terengganu darul iman" | String $3 = "nadiah#tag"

jshell> String name ="nurul nadiah yusuf" name ==> "nurul nadiah yusuf"

jshell> String name ="soc" name ==> "soc"

jshell> /vars | String $1 = "nadiah" | String $2 = "kuala terengganu darul iman" | String $3 = "nadiah#tag" | String name = "soc"

jshell> S1+$2 | Error: | cannot find symbol | symbol: variable S1 | S1+$2 | ^^

jshell> $1+$2 $6 ==> "nadiahkuala terengganu darul iman"

jshell> /vars | String $1 = "nadiah" | String $2 = "kuala terengganu darul iman" | String $3 = "nadiah#tag" | String name = "soc" | String $6 = "nadiahkuala terengganu darul iman"

jshell> 7+8 $7 ==> 15

jshell> int age = 21 age ==> 21

jshell> /vars | String $1 = "nadiah" | String $2 = "kuala terengganu darul iman" | String $3 = "nadiah#tag" | String name = "soc" | String $6 = "nadiahkuala terengganu darul iman" | int $7 = 15 | int age = 21

jshell> double price =50.99 price ==> 50.99

jshell> age + price $10 ==> 71.99000000000001

jshell> age > price $11 ==> false

jshell> age! + price | Error: | ';' expected | age! + price | ^ | Error: | not a statement | age! + price | ^---^

jshell> age < price $12 ==> true

jshell> /edit

jshell> /help	Type a Java language expression, statement, or declaration.	Or type one of the following commands:	/list [	-all	-start]	list the source you have typed	/edit	edit a source entry	/drop	delete a source entry	/save [-all	-history	-start]	Save snippet source to a file	/open	open a file as source input	/vars [	-all	-start]	list the declared variables and their values	/methods [	-all	-start]	list the declared methods and their signatures	/types [	-all	-start]	list the type declarations	/imports	list the imported items	/exit []	exit the jshell tool	/env [-class-path ] [-module-path ] [-add-modules ] ...	view or change the evaluation context	/reset [-class-path ] [-module-path ] [-add-modules ]...	reset the jshell tool	/reload [-restore] [-quiet] [-class-path ] [-module-path ]...	reset and replay relevant history -- current or previous (-restore)	/history [-all]	history of what you have typed	/help [	]	get information about using the jshell tool	/set editor	start	feedback	mode	prompt	truncation	format ...	set configuration information	/? [	]	get information about using the jshell tool	/!	rerun last snippet -- see /help rerun	/	rerun snippets by ID or ID range -- see /help rerun	/-	rerun n-th previous snippet -- see /help rerun
For more information type '/help' followed by the name of a
command or a subject.
For example '/help /list' or '/help intro'.
Subjects:
intro
an introduction to the jshell tool
keys
a description of readline-like input editing
id
a description of snippet IDs and how use them
shortcuts
a description of keystrokes for snippet and command completion,
information access, and automatic code generation
context
a description of the evaluation context options for /env /reload and /reset
rerun
a description of ways to re-evaluate previously entered snippets

jshell> /list

1 : "nadiah" 2 : "kuala terengganu darul iman" 3 : "nadiah#tag" 5 : String name ="soc"; 6 : $1+$2 7 : 7+8 8 : int age = 21; 9 : double price =50.99; 10 : age + price 11 : age > price 12 : age < price

jshell> /vars | String $1 = "nadiah" | String $2 = "kuala terengganu darul iman" | String $3 = "nadiah#tag" | String name = "soc" | String $6 = "nadiahkuala terengganu darul iman" | int $7 = 15 | int age = 21 | double price = 50.99 | double $10 = 71.99000000000001 | boolean $11 = false | boolean $12 = true

jshell> public static void main(String[] args){ ...> System.out.println("Hello World"); ...> } | Warning: | Modifier 'static' not permitted in top-level declarations, ignored | public static void main(String[] args){ | ^-----------^ | created method main(String[])

jshell> /list

1 : "nadiah" 2 : "kuala terengganu darul iman" 3 : "nadiah#tag" 5 : String name ="soc"; 6 : $1+$2 7 : 7+8 8 : int age = 21; 9 : double price =50.99; 10 : age + price 11 : age > price 12 : age < price 13 : public static void main(String[] args){ System.out.println("Hello World"); }

jshell> /vars | String $1 = "nadiah" | String $2 = "kuala terengganu darul iman" | String $3 = "nadiah#tag" | String name = "soc" | String $6 = "nadiahkuala terengganu darul iman" | int $7 = 15 | int age = 21 | double price = 50.99 | double $10 = 71.99000000000001 | boolean $11 = false | boolean $12 = true

jshell> /list

1 : "nadiah" 2 : "kuala terengganu darul iman" 3 : "nadiah#tag" 5 : String name ="soc"; 6 : $1+$2 7 : 7+8 8 : int age = 21; 9 : double price =50.99; 10 : age + price 11 : age > price 12 : age < price 13 : public static void main(String[] args){ System.out.println("Hello World"); }

jshell>

[Carmen9Wong]

Microsoft Windows [Version 10.0.16299.611] (c) 2017 Microsoft Corporation. All rights reserved.

C:\Users\User>java -version java version "1.8.0_221" Java(TM) SE Runtime Environment (build 1.8.0_221-b11) Java HotSpot(TM) 64-Bit Server VM (build 25.221-b11, mixed mode)

C:\Users\User>jshell | Welcome to JShell -- Version 12.0.2 | For an introduction type: /help intro

jshell> Wong Carmen | created variable Carmen, however, it cannot be referenced until class Wong is declared

jshell> "Wong Carmen" $2 ==> "Wong Carmen"

jshell> /exit | Goodbye

C:\Users\User>jshell -v | Welcome to JShell -- Version 12.0.2 | For an introduction type: /help intro

jshell> Wong Carmen" | Error: | unclosed string literal | Wong Carmen" | ^

jshell> "Wong Carmen" $1 ==> "Wong Carmen" | created scratch variable $1 : String

jshell> "University Utara Malaysia" $2 ==> "University Utara Malaysia" | created scratch variable $2 : String

jshell> "Wong Carmen#tag" $3 ==> "Wong Carmen#tag" | created scratch variable $3 : String

jshell> 'Wong Carmen' | Error: | unclosed character literal | 'Wong Carmen' | ^ | Error: | unclosed character literal | 'Wong Carmen' | ^

jshell> /vars | String $1 = "Wong Carmen" | String $2 = "University Utara Malaysia" | String $3 = "Wong Carmen#tag"

jshell> String name="Wong Carmen" name ==> "Wong Carmen" | created variable name : String

jshell> String $name="SOC" $name ==> "SOC" | created variable $name : String

jshell> /vars | String $1 = "Wong Carmen" | String $2 = "University Utara Malaysia" | String $3 = "Wong Carmen#tag" | String name = "Wong Carmen" | String $name = "SOC"

jshell> $1==$2 $6 ==> false | created scratch variable $6 : boolean

jshell> $1+$2 $7 ==> "Wong CarmenUniversity Utara Malaysia" | created scratch variable $7 : String

jshell> $1<$2 | Error: | bad operand types for binary operator '<' | first type: java.lang.String | second type: java.lang.String | $1<$2 | ^---^

jshell> 7=8 | Error: | unexpected type | required: variable | found: value | 7=8 | ^

jshell> 7+8 $8 ==> 15 | created scratch variable $8 : int

jshell> int age=21 age ==> 21 | created variable age : int

jshell> /vars | String $1 = "Wong Carmen" | String $2 = "University Utara Malaysia" | String $3 = "Wong Carmen#tag" | String name = "Wong Carmen" | String $name = "SOC" | boolean $6 = false | String $7 = "Wong CarmenUniversity Utara Malaysia" | int $8 = 15 | int age = 21

jshell> int price=50.99 | Error: | incompatible types: possible lossy conversion from double to int | int price=50.99; | ^---^

jshell> double price=50.99 price ==> 50.99 | created variable price : double

jshell> age+price $11 ==> 71.99000000000001 | created scratch variable $11 : double

jshell> age>price $12 ==> false | created scratch variable $12 : boolean

jshell> age!=price $13 ==> true | created scratch variable $13 : boolean

jshell> /vars | String $1 = "Wong Carmen" | String $2 = "University Utara Malaysia" | String $3 = "Wong Carmen#tag" | String name = "Wong Carmen" | String $name = "SOC" | boolean $6 = false | String $7 = "Wong CarmenUniversity Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> /help	Type a Java language expression, statement, or declaration.	Or type one of the following commands:	/list [	-all	-start]	list the source you have typed	/edit	edit a source entry	/drop	delete a source entry	/save [-all	-history	-start]	Save snippet source to a file	/open	open a file as source input	/vars [	-all	-start]	list the declared variables and their values	/methods [	-all	-start]	list the declared methods and their signatures	/types [	-all	-start]	list the type declarations	/imports	list the imported items	/exit []	exit the jshell tool	/env [-class-path ] [-module-path ] [-add-modules ] ...	view or change the evaluation context	/reset [-class-path ] [-module-path ] [-add-modules ]...	reset the jshell tool	/reload [-restore] [-quiet] [-class-path ] [-module-path ]...	reset and replay relevant history -- current or previous (-restore)	/history [-all]	history of what you have typed	/help [	]	get information about using the jshell tool	/set editor	start	feedback	mode	prompt	truncation	format ...	set configuration information	/? [	]	get information about using the jshell tool	/!	rerun last snippet -- see /help rerun	/	rerun snippets by ID or ID range -- see /help rerun	/-	rerun n-th previous snippet -- see /help rerun
For more information type '/help' followed by the name of a
command or a subject.
For example '/help /list' or '/help intro'.
Subjects:
intro
an introduction to the jshell tool
keys
a description of readline-like input editing
id
a description of snippet IDs and how use them
shortcuts
a description of keystrokes for snippet and command completion,
information access, and automatic code generation
context
a description of the evaluation context options for /env /reload and /reset
rerun
a description of ways to re-evaluate previously entered snippets

jshell> /list

1 : "Wong Carmen" 2 : "University Utara Malaysia" 3 : "Wong Carmen#tag" 4 : String name="Wong Carmen"; 5 : String $name="SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age=21; 10 : double price=50.99; 11 : age+price 12 : age>price 13 : age!=price

jshell> /vars | String $1 = "Wong Carmen" | String $2 = "University Utara Malaysia" | String $3 = "Wong Carmen#tag" | String name = "Wong Carmen" | String $name = "SOC" | boolean $6 = false | String $7 = "Wong CarmenUniversity Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> public static void main(String[]args){ ...> System.out.println("Hello World"); ...> } | Warning: | Modifier 'static' not permitted in top-level declarations, ignored | public static void main(String[]args){ | ^-----------^ | created method main(String[])

jshell> public void main(String[]) ...> System.out.println("Hello World"); | Error: | expected | public void main(String[]) | ^ | Error: | ';' expected | public void main(String[]) | ^

jshell> public void main(String[]args){ ...> System.out.println("Hello World"); ...> } | modified method main(String[]) | update overwrote method main(String[])

jshell> /list

1 : "Wong Carmen" 2 : "University Utara Malaysia" 3 : "Wong Carmen#tag" 4 : String name="Wong Carmen"; 5 : String $name="SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age=21; 10 : double price=50.99; 11 : age+price 12 : age>price 13 : age!=price 15 : public void main(String[]args){ System.out.println("Hello World"); }

jshell> /vars | String $1 = "Wong Carmen" | String $2 = "University Utara Malaysia" | String $3 = "Wong Carmen#tag" | String name = "Wong Carmen" | String $name = "SOC" | boolean $6 = false | String $7 = "Wong CarmenUniversity Utara Malaysia" | int $8 = 15 | int age = 21 | double price = 50.99 | double $11 = 71.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> /methods | void main(String[])

jshell> /list

1 : "Wong Carmen" 2 : "University Utara Malaysia" 3 : "Wong Carmen#tag" 4 : String name="Wong Carmen"; 5 : String $name="SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age=21; 10 : double price=50.99; 11 : age+price 12 : age>price 13 : age!=price 15 : public void main(String[]args){ System.out.println("Hello World"); }

jshell> /edit 15

jshell> /list

1 : "Wong Carmen" 2 : "University Utara Malaysia" 3 : "Wong Carmen#tag" 4 : String name="Wong Carmen"; 5 : String $name="SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age=21; 10 : double price=50.99; 11 : age+price 12 : age>price 13 : age!=price 15 : public void main(String[]args){ System.out.println("Hello World"); }

jshell> /edit 15

jshell> /list

1 : "Wong Carmen" 2 : "University Utara Malaysia" 3 : "Wong Carmen#tag" 4 : String name="Wong Carmen"; 5 : String $name="SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age=21; 10 : double price=50.99; 11 : age+price 12 : age>price 13 : age!=price 15 : public void main(String[]args){ System.out.println("Hello World"); }

[jannatulafiqah]

Microsoft Windows [Version 10.0.17134.1006] (c) 2018 Microsoft Corporation. All rights reserved.

C:\Users\USER>java -version java version "1.7.0_21" Java(TM) SE Runtime Environment (build 1.7.0_21-b11) Java HotSpot(TM) 64-Bit Server VM (build 23.21-b01, mixed mode)

C:\Users\USER>jshell | Welcome to JShell -- Version 12.0.2 | For an introduction type: /help intro

jshell> afiqah | Error: | cannot find symbol | symbol: variable afiqah | afiqah | ^----^

jshell>

jshell> "afiqah" $1 ==> "afiqah"

jshell> /exit | Goodbye

C:\Users\USER>jshell -v | Welcome to JShell -- Version 12.0.2 | For an introduction type: /help intro

jshell> "afiqah" $1 ==> "afiqah" | created scratch variable $1 : String

jshell> /vars | String $1 = "afiqah"

jshell> "afiqah azhan" $2 ==> "afiqah azhan" | created scratch variable $2 : String

jshell> String $name : "SOC" | Error: | ';' expected | String $name : "SOC" | ^

jshell> /vars | String $1 = "afiqah" | String $2 = "afiqah azhan"

jshell> $name = "SOC" | Error: | cannot find symbol | symbol: variable $name | $name = "SOC" | ^---^

jshell> /vars | String $1 = "afiqah" | String $2 = "afiqah azhan"

jshell> String $name = "SOC" $name ==> "SOC" | created variable $name : String

jshell> /vars | String $1 = "afiqah" | String $2 = "afiqah azhan" | String $name = "SOC"

jshell> $1==$2 $4 ==> false | created scratch variable $4 : boolean

jshell> $1 + $2 $5 ==> "afiqahafiqah azhan" | created scratch variable $5 : String

jshell> $1<$2 | Error: | bad operand types for binary operator '<' | first type: java.lang.String | second type: java.lang.String | $1<$2 | ^---^

jshell> 7+8 $6 ==> 15 | created scratch variable $6 : int

jshell> /vars | String $1 = "afiqah" | String $2 = "afiqah azhan" | String $name = "SOC" | boolean $4 = false | String $5 = "afiqahafiqah azhan" | int $6 = 15

jshell> int age = 20 age ==> 20 | created variable age : int

jshell> int price = 50.90 | Error: | incompatible types: possible lossy conversion from double to int | int price = 50.90; | ^---^

jshell> double price = 50.90 price ==> 50.9 | created variable price : double

jshell> /vars | String $1 = "afiqah" | String $2 = "afiqah azhan" | String $name = "SOC" | boolean $4 = false | String $5 = "afiqahafiqah azhan" | int $6 = 15 | int age = 20 | double price = 50.9

jshell> age + price $9 ==> 70.9 | created scratch variable $9 : double

jshell> age > price $10 ==> false | created scratch variable $10 : boolean

jshell> age !=price $11 ==> true | created scratch variable $11 : boolean

jshell> /vars | String $1 = "afiqah" | String $2 = "afiqah azhan" | String $name = "SOC" | boolean $4 = false | String $5 = "afiqahafiqah azhan" | int $6 = 15 | int age = 20 | double price = 50.9 | double $9 = 70.9 | boolean $10 = false | boolean $11 = true

jshell> /help	Type a Java language expression, statement, or declaration.	Or type one of the following commands:	/list [	-all	-start]	list the source you have typed	/edit	edit a source entry	/drop	delete a source entry	/save [-all	-history	-start]	Save snippet source to a file	/open	open a file as source input	/vars [	-all	-start]	list the declared variables and their values	/methods [	-all	-start]	list the declared methods and their signatures	/types [	-all	-start]	list the type declarations	/imports	list the imported items	/exit []	exit the jshell tool	/env [-class-path ] [-module-path ] [-add-modules ] ...	view or change the evaluation context	/reset [-class-path ] [-module-path ] [-add-modules ]...	reset the jshell tool	/reload [-restore] [-quiet] [-class-path ] [-module-path ]...	reset and replay relevant history -- current or previous (-restore)	/history [-all]	history of what you have typed	/help [	]	get information about using the jshell tool	/set editor	start	feedback	mode	prompt	truncation	format ...	set configuration information	/? [	]	get information about using the jshell tool	/!	rerun last snippet -- see /help rerun	/	rerun snippets by ID or ID range -- see /help rerun	/-	rerun n-th previous snippet -- see /help rerun
For more information type '/help' followed by the name of a
command or a subject.
For example '/help /list' or '/help intro'.
Subjects:
intro
an introduction to the jshell tool
keys
a description of readline-like input editing
id
a description of snippet IDs and how use them
shortcuts
a description of keystrokes for snippet and command completion,
information access, and automatic code generation
context
a description of the evaluation context options for /env /reload and /reset
rerun
a description of ways to re-evaluate previously entered snippets

jshell> /list

1 : "afiqah" 2 : "afiqah azhan" 3 : String $name = "SOC"; 4 : $1==$2 5 : $1 + $2 6 : 7+8 7 : int age = 20; 8 : double price = 50.90; 9 : age + price 10 : age > price 11 : age !=price

jshell> /vars | String $1 = "afiqah" | String $2 = "afiqah azhan" | String $name = "SOC" | boolean $4 = false | String $5 = "afiqahafiqah azhan" | int $6 = 15 | int age = 20 | double price = 50.9 | double $9 = 70.9 | boolean $10 = false | boolean $11 = true

jshell> public static void main (String[] args ){ ...> System.out.println("Hello World"); ...> } | Warning: | Modifier 'static' not permitted in top-level declarations, ignored | public static void main (String[] args ){ | ^-----------^ | created method main(String[])

jshell> public void main(){ ...> System.out.println("Hello World"); ...> } | created method main()

jshell> /list

1 : "afiqah" 2 : "afiqah azhan" 3 : String $name = "SOC"; 4 : $1==$2 5 : $1 + $2 6 : 7+8 7 : int age = 20; 8 : double price = 50.90; 9 : age + price 10 : age > price 11 : age !=price 12 : public static void main (String[] args ){ System.out.println("Hello World"); } 13 : public void main(){ System.out.println("Hello World"); }

jshell> /vars | String $1 = "afiqah" | String $2 = "afiqah azhan" | String $name = "SOC" | boolean $4 = false | String $5 = "afiqahafiqah azhan" | int $6 = 15 | int age = 20 | double price = 50.9 | double $9 = 70.9 | boolean $10 = false | boolean $11 = true

jshell> /methods | void main(String[]) | void main()

jshell> /list

1 : "afiqah" 2 : "afiqah azhan" 3 : String $name = "SOC"; 4 : $1==$2 5 : $1 + $2 6 : 7+8 7 : int age = 20; 8 : double price = 50.90; 9 : age + price 10 : age > price 11 : age !=price 12 : public static void main (String[] args ){ System.out.println("Hello World"); } 13 : public void main(){ System.out.println("Hello World"); }

jshell> /edit 2 | Error: | ';' expected | jannatul"afiqah azhan"; | ^ | Error: | cannot find symbol | symbol: variable jannatul | jannatul"afiqah azhan"; | ^------^

jshell> /list

1 : "afiqah" 2 : "afiqah azhan" 3 : String $name = "SOC"; 4 : $1==$2 5 : $1 + $2 6 : 7+8 7 : int age = 20; 8 : double price = 50.90; 9 : age + price 10 : age > price 11 : age !=price 12 : public static void main (String[] args ){ System.out.println("Hello World"); } 13 : public void main(){ System.out.println("Hello World"); }

jshell> /edit 13 | modified method main() | update overwrote method main()

jshell> /list

1 : "afiqah" 2 : "afiqah azhan" 3 : String $name = "SOC"; 4 : $1==$2 5 : $1 + $2 6 : 7+8 7 : int age = 20; 8 : double price = 50.90; 9 : age + price 10 : age > price 11 : age !=price 12 : public static void main (String[] args ){ System.out.println("Hello World"); } 14 : public void main(){ System.out.println("Hello uum"); }

jshell> /edit2 | Invalid command: /edit2 | Type /help for help.

jshell> /edit 2 $15 ==> "jannatul afiqah azhan" | created scratch variable $15 : String

jshell> /list

1 : "afiqah" 2 : "afiqah azhan" 3 : String $name = "SOC"; 4 : $1==$2 5 : $1 + $2 6 : 7+8 7 : int age = 20; 8 : double price = 50.90; 9 : age + price 10 : age > price 11 : age !=price 12 : public static void main (String[] args ){ System.out.println("Hello World"); } 14 : public void main(){ System.out.println("Hello uum"); } 15 : "jannatul afiqah azhan";

jshell>

[fatinshahira]

Microsoft Windows [Version 10.0.17134.1006] (c) 2018 Microsoft Corporation. All rights reserved.

C:\Users\acer>java -version java version "12.0.2" 2019-07-16 Java(TM) SE Runtime Environment (build 12.0.2+10) Java HotSpot(TM) 64-Bit Server VM (build 12.0.2+10, mixed mode, sharing)

C:\Users\acer>jshell | Welcome to JShell -- Version 12.0.2 | For an introduction type: /help intro

jshell> fatin | Error: | cannot find symbol | symbol: variable fatin | fatin | ^---^

jshell> /exit | Goodbye

C:\Users\acer>jshell -v | Welcome to JShell -- Version 12.0.2 | For an introduction type: /help intro

jshell> fatin | Error: | cannot find symbol | symbol: variable fatin | fatin | ^---^

jshell> "fatin" $1 ==> "fatin" | created scratch variable $1 : String

jshell> "Universiti Utara Malaysia" $2 ==> "Universiti Utara Malaysia" | created scratch variable $2 : String

jshell> "fatin#tag" $3 ==> "fatin#tag" | created scratch variable $3 : String

jshell> /vars | String $1 = "fatin" | String $2 = "Universiti Utara Malaysia" | String $3 = "fatin#tag"

jshell> String name ="fatin" name ==> "fatin" | created variable name : String

jshell> String $name ="SOC" $name ==> "SOC" | created variable $name : String

jshell> /vars | String $1 = "fatin" | String $2 = "Universiti Utara Malaysia" | String $3 = "fatin#tag" | String name = "fatin" | String $name = "SOC"

jshell> $1==$2 $6 ==> false | created scratch variable $6 : boolean

jshell> $1+$2 $7 ==> "fatinUniversiti Utara Malaysia" | created scratch variable $7 : String

jshell> $1<$2 | Error: | bad operand types for binary operator '<' | first type: java.lang.String | second type: java.lang.String | $1<$2 | ^---^

jshell> 7+8 $8 ==> 15 | created scratch variable $8 : int

jshell> int age = 20 age ==> 20 | created variable age : int

jshell> /vars | String $1 = "fatin" | String $2 = "Universiti Utara Malaysia" | String $3 = "fatin#tag" | String name = "fatin" | String $name = "SOC" | boolean $6 = false | String $7 = "fatinUniversiti Utara Malaysia" | int $8 = 15 | int age = 20

jshell> int price = 50.99 | Error: | incompatible types: possible lossy conversion from double to int | int price = 50.99; | ^---^

jshell> double price =50.99 price ==> 50.99 | created variable price : double

jshell> /vars | String $1 = "fatin" | String $2 = "Universiti Utara Malaysia" | String $3 = "fatin#tag" | String name = "fatin" | String $name = "SOC" | boolean $6 = false | String $7 = "fatinUniversiti Utara Malaysia" | int $8 = 15 | int age = 20 | double price = 50.99

jshell> age + price $11 ==> 70.99000000000001 | created scratch variable $11 : double

jshell> age > price $12 ==> false | created scratch variable $12 : boolean

jshell> /vars | String $1 = "fatin" | String $2 = "Universiti Utara Malaysia" | String $3 = "fatin#tag" | String name = "fatin" | String $name = "SOC" | boolean $6 = false | String $7 = "fatinUniversiti Utara Malaysia" | int $8 = 15 | int age = 20 | double price = 50.99 | double $11 = 70.99000000000001 | boolean $12 = false

jshell> age !=price $13 ==> true | created scratch variable $13 : boolean

jshell> /vars | String $1 = "fatin" | String $2 = "Universiti Utara Malaysia" | String $3 = "fatin#tag" | String name = "fatin" | String $name = "SOC" | boolean $6 = false | String $7 = "fatinUniversiti Utara Malaysia" | int $8 = 15 | int age = 20 | double price = 50.99 | double $11 = 70.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> /help	Type a Java language expression, statement, or declaration.	Or type one of the following commands:	/list [	-all	-start]	list the source you have typed	/edit	edit a source entry	/drop	delete a source entry	/save [-all	-history	-start]	Save snippet source to a file	/open	open a file as source input	/vars [	-all	-start]	list the declared variables and their values	/methods [	-all	-start]	list the declared methods and their signatures	/types [	-all	-start]	list the type declarations	/imports	list the imported items	/exit []	exit the jshell tool	/env [-class-path ] [-module-path ] [-add-modules ] ...	view or change the evaluation context	/reset [-class-path ] [-module-path ] [-add-modules ]...	reset the jshell tool	/reload [-restore] [-quiet] [-class-path ] [-module-path ]...	reset and replay relevant history -- current or previous (-restore)	/history [-all]	history of what you have typed	/help [	]	get information about using the jshell tool	/set editor	start	feedback	mode	prompt	truncation	format ...	set configuration information	/? [	]	get information about using the jshell tool	/!	rerun last snippet -- see /help rerun	/	rerun snippets by ID or ID range -- see /help rerun	/-	rerun n-th previous snippet -- see /help rerun
For more information type '/help' followed by the name of a
command or a subject.
For example '/help /list' or '/help intro'.
Subjects:
intro
an introduction to the jshell tool
keys
a description of readline-like input editing
id
a description of snippet IDs and how use them
shortcuts
a description of keystrokes for snippet and command completion,
information access, and automatic code generation
context
a description of the evaluation context options for /env /reload and /reset
rerun
a description of ways to re-evaluate previously entered snippets

jshell> /list

1 : "fatin" 2 : "Universiti Utara Malaysia" 3 : "fatin#tag" 4 : String name ="fatin"; 5 : String $name ="SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age = 20; 10 : double price =50.99; 11 : age + price 12 : age > price 13 : age !=price

jshell> /vars | String $1 = "fatin" | String $2 = "Universiti Utara Malaysia" | String $3 = "fatin#tag" | String name = "fatin" | String $name = "SOC" | boolean $6 = false | String $7 = "fatinUniversiti Utara Malaysia" | int $8 = 15 | int age = 20 | double price = 50.99 | double $11 = 70.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> public static void main(String[]args){ ...> System.out.println("Hello World"); ...> } | Warning: | Modifier 'static' not permitted in top-level declarations, ignored | public static void main(String[]args){ | ^-----------^ | created method main(String[])

jshell> public void main(String[]args){ ...> System.out.println("Hello World"); ...> } | modified method main(String[]) | update overwrote method main(String[])

jshell> /list

1 : "fatin" 2 : "Universiti Utara Malaysia" 3 : "fatin#tag" 4 : String name ="fatin"; 5 : String $name ="SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age = 20; 10 : double price =50.99; 11 : age + price 12 : age > price 13 : age !=price 15 : public void main(String[]args){ System.out.println("Hello World"); }

jshell> /vars | String $1 = "fatin" | String $2 = "Universiti Utara Malaysia" | String $3 = "fatin#tag" | String name = "fatin" | String $name = "SOC" | boolean $6 = false | String $7 = "fatinUniversiti Utara Malaysia" | int $8 = 15 | int age = 20 | double price = 50.99 | double $11 = 70.99000000000001 | boolean $12 = false | boolean $13 = true

jshell> /methods | void main(String[])

jshell> /list

1 : "fatin" 2 : "Universiti Utara Malaysia" 3 : "fatin#tag" 4 : String name ="fatin"; 5 : String $name ="SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age = 20; 10 : double price =50.99; 11 : age + price 12 : age > price 13 : age !=price 15 : public void main(String[]args){ System.out.println("Hello World"); }

jshell> edit 15 | Error: | ';' expected | edit 15 | ^ | Error: | cannot find symbol | symbol: variable edit | edit 15 | ^--^

jshell> /edit 15 | modified method main(String[]) | update overwrote method main(String[])

jshell> / | Command: '/' is ambiguous: /list, /edit, /drop, /save, /open, /vars, /methods, /types, /imports, /exit, /env, /reset, /reload, /history, /debug, /help, /set, /?, /! | Type /help for help.

jshell> /edit 15

jshell> /list

1 : "fatin" 2 : "Universiti Utara Malaysia" 3 : "fatin#tag" 4 : String name ="fatin"; 5 : String $name ="SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age = 20; 10 : double price =50.99; 11 : age + price 12 : age > price 13 : age !=price 16 : public void main(String[]args){ System.out.println("Hello World"); }

jshell> /edit 2

jshell> /list

1 : "fatin" 2 : "Universiti Utara Malaysia" 3 : "fatin#tag" 4 : String name ="fatin"; 5 : String $name ="SOC"; 6 : $1==$2 7 : $1+$2 8 : 7+8 9 : int age = 20; 10 : double price =50.99; 11 : age + price 12 : age > price 13 : age !=price 16 : public void main(String[]args){ System.out.println("Hello World"); }

jshell>