How to find java.home

How to find java.home

For Linux and macOS, let's use grep:
    java -XshowSettings:properties -version 2>&1 > /dev/null | grep 'java.home' 

And for Windows, let's use findstr:
    java -XshowSettings:properties -version 2>&1 | findstr "java.home"
  
  
  
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thanooj-ubuntu@thanoojubuntu-Inspiron-3521:/bin$ java -XshowSettings:properties -version 2>&1 > /dev/null | grep 'java.home' 
    java.home = /usr/lib/jvm/java-11-openjdk-amd64
thanooj-ubuntu@thanoojubuntu-Inspiron-3521:/bin$ 





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thanooj-ubuntu@thanoojubuntu-Inspiron-3521:/bin$ java -XshowSettings:properties -version
Property settings:
    awt.toolkit = sun.awt.X11.XToolkit
    file.encoding = UTF-8
    file.separator = /
    java.awt.graphicsenv = sun.awt.X11GraphicsEnvironment
    java.awt.printerjob = sun.print.PSPrinterJob
    java.class.path = 
    java.class.version = 55.0
    java.home = /usr/lib/jvm/java-11-openjdk-amd64
    java.io.tmpdir = /tmp
    java.library.path = /usr/java/packages/lib
        /usr/lib/x86_64-linux-gnu/jni
        /lib/x86_64-linux-gnu
        /usr/lib/x86_64-linux-gnu
        /usr/lib/jni
        /lib
        /usr/lib
    java.runtime.name = OpenJDK Runtime Environment
    java.runtime.version = 11.0.8+10-post-Ubuntu-0ubuntu120.04
    java.specification.name = Java Platform API Specification
    java.specification.vendor = Oracle Corporation
    java.specification.version = 11
    java.vendor = Ubuntu
    java.vendor.url = https://ubuntu.com/
    java.vendor.url.bug = https://bugs.launchpad.net/ubuntu/+source/openjdk-lts
    java.version = 11.0.8
    java.version.date = 2020-07-14
    java.vm.compressedOopsMode = 32-bit
    java.vm.info = mixed mode, sharing
    java.vm.name = OpenJDK 64-Bit Server VM
    java.vm.specification.name = Java Virtual Machine Specification
    java.vm.specification.vendor = Oracle Corporation
    java.vm.specification.version = 11
    java.vm.vendor = Ubuntu
    java.vm.version = 11.0.8+10-post-Ubuntu-0ubuntu120.04
    jdk.debug = release
    line.separator = \n 
    os.arch = amd64
    os.name = Linux
    os.version = 5.4.0-42-generic
    path.separator = :
    sun.arch.data.model = 64
    sun.boot.library.path = /usr/lib/jvm/java-11-openjdk-amd64/lib
    sun.cpu.endian = little
    sun.cpu.isalist = 
    sun.desktop = gnome
    sun.io.unicode.encoding = UnicodeLittle
    sun.java.launcher = SUN_STANDARD
    sun.jnu.encoding = UTF-8
    sun.management.compiler = HotSpot 64-Bit Tiered Compilers
    sun.os.patch.level = unknown
    user.country = IN
    user.dir = /usr/bin
    user.home = /home/thanooj-ubuntu
    user.language = en
    user.name = thanooj-ubuntu
    user.timezone = 

openjdk version "11.0.8" 2020-07-14
OpenJDK Runtime Environment (build 11.0.8+10-post-Ubuntu-0ubuntu120.04)
OpenJDK 64-Bit Server VM (build 11.0.8+10-post-Ubuntu-0ubuntu120.04, mixed mode, sharing)
thanooj-ubuntu@thanoojubuntu-Inspiron-3521:/bin$