Install using HomeBrew
$ brew install --cask adoptopenjdk/openjdk/adoptopenjdk11 ... ==> Installing Cask adoptopenjdk11 ==> Running installer for adoptopenjdk11; your password may be necessary. ==> Package installers may write to any location; options such as --appdir are ignored. Password:
Manual Install from AdoptOpenJDK
Manual Install from jdk.java.net
Update download url based on the latest version available in this download page: jdk.java.net/archive.
$ cd /tmp $ curl -O https://download.java.net/java/GA/jdk11/9/GPL/openjdk-11.0.2_osx-x64_bin.tar.gz $ tar xf openjdk-11.0.2_osx-x64_bin.tar.gz $ sudo mv jdk-11.0.2.jdk /Library/Java/JavaVirtualMachines/
Listing Installed JDK Version
$ /usr/libexec/java_home -h Usage: java_home [options...] Returns the path to a Java home directory from the current user's settings. Options: [-v/--version <version>] Filter versions (as if JAVA_VERSION had been set in the environment). [-a/--arch <architecture>] Filter architecture (as if JAVA_ARCH had been set in the environment). [-F/--failfast] Fail when filters return no JVMs, do not continue with default. [ --exec <command> ...] Execute the $JAVA_HOME/bin/<command> with the remaining arguments. [-X/--xml] Print full JVM list and additional data as XML plist. [-V/--verbose] Print full JVM list with architectures. [-h/--help] This usage information.
$ /usr/libexec/java_home -V Matching Java Virtual Machines (3): 18.104.22.168 (x86_64) "AdoptOpenJDK" - "AdoptOpenJDK 11" /Library/Java/JavaVirtualMachines/adoptopenjdk-11.jdk/Contents/Home 11.0.2 (x86_64) "Oracle Corporation" - "OpenJDK 11.0.2" /Library/Java/JavaVirtualMachines/jdk-11.0.2.jdk/Contents/Home 1.8.0_212 (x86_64) "AdoptOpenJDK" - "AdoptOpenJDK 8" /Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home /Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home
Switching JDK Version
Get JAVA_HOME path and set it to environment variable.
Add the following to
export JAVA_HOME=`/usr/libexec/java_home -V 2>&1 | grep 11.0.9 | grep -o '/Library/.*'` PATH=$JAVA_HOME/bin:$PATH
$ /usr/libexec/java_home -V 2>&1 | grep 11.0.9 | grep -o '/Library/.*' /Library/Java/JavaVirtualMachines/adoptopenjdk-11.jdk/Contents/Home $ export JAVA_HOME=`/usr/libexec/java_home -V 2>&1 | grep 11.0.9 | grep -o '/Library/.*'` $ PATH=$JAVA_HOME/bin:$PATH $ java -version openjdk version "22.214.171.124" 2020-11-04 OpenJDK Runtime Environment AdoptOpenJDK (build 126.96.36.199+1) OpenJDK 64-Bit Server VM AdoptOpenJDK (build 188.8.131.52+1, mixed mode)
Also see: https://docs.oracle.com/en/java/javase/11/jshell/snippets.html
$ jshell | Welcome to JShell -- Version 184.108.40.206 | For an introduction type: /help intro jshell> /help intro | | intro | ===== | | The jshell tool allows you to execute Java code, getting immediate results. | You can enter a Java definition (variable, method, class, etc), like: int x = 8 | or a Java expression, like: x + x | or a Java statement or import. | These little chunks of Java code are called 'snippets'. | | There are also the jshell tool commands that allow you to understand and | control what you are doing, like: /list | | For a list of commands: /help jshell> /exit | Goodbye