Install OpenJDK

Compatibility

• ✅ 2.1 | ✅ 2.0 | ✅ 1.9 | ...

Objective

Quickly install OpenJDK on Mac, Windows, Linux.

Linux

1. Use the openjdk8 or openjdk11 package provided by your Linux distribution.

   # Example
   sudo apt-get install openjdk11-jdk

Mac

1. Download OpenJDK8 or OpenJDK11 Hotspot VM from https://adoptopenjdk.net/.
2. From Terminal:

   sudo mkdir -p /Library/Java/JavaVirtualMachines/
   sudo tar -xf ~/Downloads/openjdk-*.tar.gz -C /Library/Java/JavaVirtualMachines/

Windows

1. Download OpenJDK8 or OpenJDK11 Hotspot VM from https://adoptopenjdk.net/.
2. From PowerShell

   powershell Start-Process powershell -Verb runAs
   Expand-Archive -Path "$env:USERPROFILE\Downloads\OpenJDK*.zip" -DestinationPath "$env:PROGRAMFILES\OpenJDK\"
   
   #Environmental vars
   $env:JAVA_HOME = (Get-ChildItem -Path "$env:PROGRAMFILES\OpenJDK" | Where-Object {$_.PSIsContainer} |
       Sort-Object LastWriteTime -Descending | Select-Object -First 1).FullName
   $env:PATH += ";$env:JAVA_HOME\bin"
   setx /M JAVA_HOME "$env:JAVA_HOME"
   setx /M PATH "$env:PATH"
   
   # Registry
   $VERSION = ("$env:JAVA_HOME" -Split "\\jdk-")[1]
   $MAJOR_VERSION = ($VERSION -Split "\.")[0] + "." + ($VERSION -Split "\.")[1]
   reg add "HKLM\SOFTWARE\JavaSoft\JDK" /v CurrentVersion /t REG_SZ /d "$MAJOR_VERSION" /f
   reg add "HKLM\SOFTWARE\JavaSoft\JDK\$MAJOR_VERSION" /v JavaHome /t REG_SZ /d "$env:JAVA_HOME" /f
   
   # Cleanup
   Remove-Item -Path "$env:USERPROFILE\Downloads\OpenJDK*.zip"