jEnv is a command line tool to set the JAVA_HOME enviornment variable. The blog of [Configuring jenv the right way)[] gives the right way to set it – it fixed my sbt project too.


  • Install jEnv: brew install jenv
  • Set Zsh:
    • echo 'export PATH="$HOME/.jenv/bin:$PATH"' >> ~/.zshrc
    • echo 'eval "$(jenv init -)"' >> ~/.zshrc
  • run unset JAVA_TOOL_OPTIONS (imortant!)
  • User brew to install JDK versions from AdoptOpenJDK
  • run /usr/libexec/java_home -V to see installed versions. They are installed in /Library/Java/JavaVirtualMachines
  • add each JDK to jenv, for example jenv add /Library/Java/JavaVirtualMachines/jdk-11.jdk/Contents/Home
  • use jenv versions to see all versions
  • run jenv enable-plugin maven and jenv enable-plugin export

Set Version and Verify

Use jenv global 11.0 to set global. Use jenv local 11.0 to set local.

To verify, run echo $JAVA_HOME and javac -version.