KT - Difference between String, StringBuilder, and StringBuffer

[AdibahTalib]

Factor	String	StringBuffer	StringBuilder
Uses	when its not going to change much	when its going to change often with many thread involved	when it going to change often with single thread
Modifiable	Immutable	Mutable	Mutable
Thread Safe	Yes	Yes	No
Synchronized	Yes	Yes	No
Performance	Slow	Slower than StringBuilder but faster than String	Faster than StringBuffer
Storage Area	Constant String Pool	Heap	Heap

*mutable - can change the value of the object

*immutable - cannot change the value of the object

*heap - is created when the JVM is started and may increase or decrease in size as the application runs.

*string constant pool - a special memory location for string to reuse of string objects ( it does not create the same string object if there is already a string constant in the pool )