HanSolo/javafinder - Githubissues

JavaFinder

JavaFinder is a little command line tool to find (hopefully) all Java installations in a given path (incl. subfolders). This can be useful if you need to figure out what kind of distributions you have installed on your machine. It should find builds of OpenJDK and GraalVM including the following distributions:

AdoptOpenJDK
AdoptOpenJDK J9
Bi Sheng
Corretto
Debian
Dragonwell
Gluon GraalVM
GraalVM CE
GraalVM EE
GraalVM Community
GraalVM
JetBrains
Kona
Liberica
Liberica Native
Mandrel
Microsoft
OJDK Build
Open Logic
Oracle
Oracle OpenJDK
RedHat
SAP Machine
Semeru
Semeru Certified
Temurin
Trava
Ubuntu
Zulu
Zulu Prime

Download the binaries

You can download the latest binaries here.

Requirements to build the binary yourself

A build of OpenJDK 21 (org greater than 21)
GraalVM CE (to build the native image)

Build jar file

Execute the following command in the project folder

./gradlew clean build

You will find the jar file in the build/lib folder:

javafinder-21.0.0.jar

Build native image

To build a native image, make sure you have GraalVM installed with the native-image option

Shell

native-image -cp classes:build/libs/javafinder-21.0.0.jar --initialize-at-build-time=Constants -H:Name=javafinder eu.hansolo.javafinder.Main --no-fallback

Parameters

When called without any parameter javafinder, it will scan the following predefined paths:

Windows: C:\Program Files\Java\
Linux : /usr/lib/jvm
MacOS : /System/Volumes/Data/Library/Java/JavaVirtualMachines/

-h

Will show some info javafinder -h

-v

Will show the version number javafinder -v

csv

Will output the result in csv format javafinder csv /PATH

json

Will output the result in json beautified format javafinder json /PATH

Not specified

If you don't specify an output format it will use json (not beautified) javafinder /PATH

Usage

Find all JDK distributions on MacOS in the path /System/Volumes/Data/Library/Java/JavaVirtualMachines and print in non beautified json format to the console:

Shell: ./javafinder /System/Volumes/Data/Library/Java/JavaVirtualMachines

Find all JDK distributions on Windows in the path c:\ and print in csv format to the console:

Shell: javafinder csv c:\

Result:

The json output also contains information about the current system

Output all distributions found in non beautified json format ./javafinder /System/Volumes/Data/Library/Java/JavaVirtualMachines

{"timestamp":1685524843,"search_path":"/System/Volumes/Data/Library/Java/JavaVirtualMachines/","sysinfo":{"operating_system":"Mac OS","architecture":"ARM64","bit":"64 Bit","hostname":"MY_HOST"},"distributions":[{"vendor":"Azul","name":"Zulu","version":"20.0.1","timestamp":1685524843,"path":"/System/Volumes/Data/Library/Java/JavaVirtualMachines/zulu-20.jdk/zulu-20.jdk/Contents/Home/","build_scope":"OpenJDK","in_use":false,"used_by":[]},{"vendor":"Azul","name":"Zulu","version":"17.0.7","timestamp":1685524843,"path":"/System/Volumes/Data/Library/Java/JavaVirtualMachines/zulu-17.jdk/zulu-17.jdk/Contents/Home/","build_scope":"OpenJDK","in_use":true,"used_by":["/Library/Java/JavaVirtualMachines/zulu-17.jdk/zulu-17.jdk/Contents/Home/bin/java -XX:MaxHeapSize=32g --add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.lang.invoke=ALL-UNNAMED --add-opens=java.prefs/java.util.prefs=ALL-UNNAMED --add-opens=java.base/java.nio.charset=ALL-UNNAMED --add-opens=java.base/java.net=ALL-UNNAMED --add-opens=java.base/java.util.concurrent.atomic=ALL-UNNAMED -Xmx2048M -Dfile.encoding=UTF-8 -Duser.country=DE -Duser.language=en -Duser.variant -cp /Users/hansolo/.gradle/wrapper/dists/gradle-8.0.2-bin/25jlreiuz6u3xu2phlpa2vv4m/gradle-8.0.2/lib/gradle-launcher-8.0.2.jar org.gradle.launcher.daemon.bootstrap.GradleDaemon 8.0.2",]},{"vendor":"Oracle","name":"Graal VM CE","version":"22.3.1","timestamp":1685524843,"path":"/System/Volumes/Data/Library/Java/JavaVirtualMachines/graalvm-ce-java17-22.3.1/Contents/Home/","build_scope":"GraalVM","in_use":true,"used_by":["/Library/Java/JavaVirtualMachines/graalvm-ce-java17-22.3.1/Contents/Home/bin/java -XX:MaxHeapSize=32g --add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.lang.invoke=ALL-UNNAMED --add-opens=java.prefs/java.util.prefs=ALL-UNNAMED --add-opens=java.base/java.nio.charset=ALL-UNNAMED --add-opens=java.base/java.net=ALL-UNNAMED --add-opens=java.base/java.util.concurrent.atomic=ALL-UNNAMED -Xmx2048M -Dfile.encoding=UTF-8 -Duser.country=DE -Duser.language=en -Duser.variant -cp /Users/hansolo/.gradle/wrapper/dists/gradle-8.0.2-bin/25jlreiuz6u3xu2phlpa2vv4m/gradle-8.0.2/lib/gradle-launcher-8.0.2.jar org.gradle.launcher.daemon.bootstrap.GradleDaemon 8.0.2",]},{"vendor":"Azul","name":"Zulu","version":"8.0.372+7","timestamp":1685524843,"path":"/System/Volumes/Data/Library/Java/JavaVirtualMachines/zulu-8.jdk/zulu-8.jdk/Contents/Home/jre/","build_scope":"OpenJDK","in_use":false,"used_by":[]},{"vendor":"Azul","name":"Zulu","version":"11.0.19","timestamp":1685524843,"path":"/System/Volumes/Data/Library/Java/JavaVirtualMachines/zulu-11.jdk/zulu-11.jdk/Contents/Home/","build_scope":"OpenJDK","in_use":false,"used_by":[]},{"vendor":"Azul","name":"Zulu","version":"21-ea+22","timestamp":1685524843,"path":"/System/Volumes/Data/Library/Java/JavaVirtualMachines/zulu-21.jdk/zulu-21.jdk/Contents/Home/","build_scope":"OpenJDK","in_use":false,"used_by":[]},{"vendor":"Azul","name":"Zulu","version":"8.0.372+7","timestamp":1685524843,"path":"/System/Volumes/Data/Library/Java/JavaVirtualMachines/zulu-8.jdk/zulu-8.jdk/Contents/Home/","build_scope":"OpenJDK","in_use":false,"used_by":[]},{"vendor":"Gluon","name":"Gluon GraalVM","version":"22.1.0.1","timestamp":1685524843,"path":"/System/Volumes/Data/Library/Java/JavaVirtualMachines/gluon-graalvm/Contents/Home/","build_scope":"GraalVM","in_use":false,"used_by":[]}]}

Output all distributions found in beautified json format ./javafinder json /System/Volumes/Data/Library/Java/JavaVirtualMachines

{
  "timestamp":1685524802,
  "search_path":"/System/Volumes/Data/Library/Java/JavaVirtualMachines/",
  "sysinfo":{
    "operating_system":"Mac OS",
    "architecture":"ARM64",
    "bit":"64 Bit",
    "hostname":"MY_HOST"
  },
  "distributions":[
    {
      "vendor":"Azul",
      "name":"Zulu",
      "version":"17.0.7",
      "timestamp":1685524802,
      "path":"/System/Volumes/Data/Library/Java/JavaVirtualMachines/zulu-17.jdk/zulu-17.jdk/Contents/Home/",
      "build_scope":"OpenJDK",
      "in_use":true,
      "used_by":[
        "/Library/Java/JavaVirtualMachines/zulu-17.jdk/zulu-17.jdk/Contents/Home/bin/java -XX:MaxHeapSize=32g --add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.lang.invoke=ALL-UNNAMED --add-opens=java.prefs/java.util.prefs=ALL-UNNAMED --add-opens=java.base/java.nio.charset=ALL-UNNAMED --add-opens=java.base/java.net=ALL-UNNAMED --add-opens=java.base/java.util.concurrent.atomic=ALL-UNNAMED -Xmx2048M -Dfile.encoding=UTF-8 -Duser.country=DE -Duser.language=en -Duser.variant -cp /Users/hansolo/.gradle/wrapper/dists/gradle-8.0.2-bin/25jlreiuz6u3xu2phlpa2vv4m/gradle-8.0.2/lib/gradle-launcher-8.0.2.jar org.gradle.launcher.daemon.bootstrap.GradleDaemon 8.0.2"      ]
    },
    {
      "vendor":"Azul",
      "name":"Zulu",
      "version":"8.0.372+7",
      "timestamp":1685524802,
      "path":"/System/Volumes/Data/Library/Java/JavaVirtualMachines/zulu-8.jdk/zulu-8.jdk/Contents/Home/",
      "build_scope":"OpenJDK",
      "in_use":false,
      "used_by":[
      ]
    },
    {
      "vendor":"Azul",
      "name":"Zulu",
      "version":"20.0.1",
      "timestamp":1685524802,
      "path":"/System/Volumes/Data/Library/Java/JavaVirtualMachines/zulu-20.jdk/zulu-20.jdk/Contents/Home/",
      "build_scope":"OpenJDK",
      "in_use":false,
      "used_by":[
      ]
    },
    {
      "vendor":"Azul",
      "name":"Zulu",
      "version":"8.0.372+7",
      "timestamp":1685524802,
      "path":"/System/Volumes/Data/Library/Java/JavaVirtualMachines/zulu-8.jdk/zulu-8.jdk/Contents/Home/jre/",
      "build_scope":"OpenJDK",
      "in_use":false,
      "used_by":[
      ]
    },
    {
      "vendor":"Gluon",
      "name":"Gluon GraalVM",
      "version":"22.1.0.1",
      "timestamp":1685524802,
      "path":"/System/Volumes/Data/Library/Java/JavaVirtualMachines/gluon-graalvm/Contents/Home/",
      "build_scope":"GraalVM",
      "in_use":false,
      "used_by":[
      ]
    },
    {
      "vendor":"Azul",
      "name":"Zulu",
      "version":"11.0.19",
      "timestamp":1685524802,
      "path":"/System/Volumes/Data/Library/Java/JavaVirtualMachines/zulu-11.jdk/zulu-11.jdk/Contents/Home/",
      "build_scope":"OpenJDK",
      "in_use":false,
      "used_by":[
      ]
    },
    {
      "vendor":"Oracle",
      "name":"Graal VM CE",
      "version":"22.3.1",
      "timestamp":1685524802,
      "path":"/System/Volumes/Data/Library/Java/JavaVirtualMachines/graalvm-ce-java17-22.3.1/Contents/Home/",
      "build_scope":"GraalVM",
      "in_use":true,
      "used_by":[
        "/Library/Java/JavaVirtualMachines/graalvm-ce-java17-22.3.1/Contents/Home/bin/java -XX:MaxHeapSize=32g --add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.lang.invoke=ALL-UNNAMED --add-opens=java.prefs/java.util.prefs=ALL-UNNAMED --add-opens=java.base/java.nio.charset=ALL-UNNAMED --add-opens=java.base/java.net=ALL-UNNAMED --add-opens=java.base/java.util.concurrent.atomic=ALL-UNNAMED -Xmx2048M -Dfile.encoding=UTF-8 -Duser.country=DE -Duser.language=en -Duser.variant -cp /Users/hansolo/.gradle/wrapper/dists/gradle-8.0.2-bin/25jlreiuz6u3xu2phlpa2vv4m/gradle-8.0.2/lib/gradle-launcher-8.0.2.jar org.gradle.launcher.daemon.bootstrap.GradleDaemon 8.0.2"      ]
    },
    {
      "vendor":"Azul",
      "name":"Zulu",
      "version":"21-ea+22",
      "timestamp":1685524802,
      "path":"/System/Volumes/Data/Library/Java/JavaVirtualMachines/zulu-21.jdk/zulu-21.jdk/Contents/Home/",
      "build_scope":"OpenJDK",
      "in_use":false,
      "used_by":[
      ]
    }
  ]
}

The csv output only contains the distributions found

Output all distributions found in csv format ./javafinder csv /System/Volumes/Data/Library/Java/JavaVirtualMachines

Vendor,Distribution,Version,Timestamp,Path,Type,InUse,Timestamp
Gluon,Gluon GraalVM,22.1.0.1,2023-05-31T09:19:28.069171Z,/System/Volumes/Data/Library/Java/JavaVirtualMachines/gluon-graalvm/Contents/Home/,GraalVM,false,1685524768
Azul,Zulu,8.0.372+7,2023-05-31T09:19:28.080253Z,/System/Volumes/Data/Library/Java/JavaVirtualMachines/zulu-8.jdk/zulu-8.jdk/Contents/Home/jre/,OpenJDK,false,1685524768
Azul,Zulu,17.0.7,2023-05-31T09:19:28.075692Z,/System/Volumes/Data/Library/Java/JavaVirtualMachines/zulu-17.jdk/zulu-17.jdk/Contents/Home/,OpenJDK,true,1685524768
Azul,Zulu,20.0.1,2023-05-31T09:19:28.077076Z,/System/Volumes/Data/Library/Java/JavaVirtualMachines/zulu-20.jdk/zulu-20.jdk/Contents/Home/,OpenJDK,false,1685524768
Azul,Zulu,11.0.19,2023-05-31T09:19:28.072419Z,/System/Volumes/Data/Library/Java/JavaVirtualMachines/zulu-11.jdk/zulu-11.jdk/Contents/Home/,OpenJDK,false,1685524768
Azul,Zulu,21-ea+22,2023-05-31T09:19:28.078641Z,/System/Volumes/Data/Library/Java/JavaVirtualMachines/zulu-21.jdk/zulu-21.jdk/Contents/Home/,OpenJDK,false,1685524768
Azul,Zulu,8.0.372+7,2023-05-31T09:19:28.081645Z,/System/Volumes/Data/Library/Java/JavaVirtualMachines/zulu-8.jdk/zulu-8.jdk/Contents/Home/,OpenJDK,false,1685524768
Oracle,Graal VM CE,22.3.1,2023-05-31T09:19:28.074189Z,/System/Volumes/Data/Library/Java/JavaVirtualMachines/graalvm-ce-java17-22.3.1/Contents/Home/,GraalVM,true,1685524768