Whenever you I navigate to this directory or a sub-directory of it, then jenv will ensure that Java 12 will be used. java-version file in the directory with the specified version. For example to set Java 12 for OpenWhisk, I navigate to ~/Project/openwhisk and type: I like to set a given Java version on a per-directory basis using jenv local. Update: with newer version of jenv, use jenv local * system (set by /Users/rob/.jenv/version)

Jenv’s versions will provide you a list of the available versions on your system: ls /Library/Java/JavaVirtualMachines/ will tell you. The exact versions depend on what you have installed. $ jenv add /Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home/ $ jenv add /Library/Java/JavaVirtualMachines/adoptopenjdk-12.jdk/Contents/Home/ $ jenv add /Library/Java/JavaVirtualMachines/jdk-15.0.1.jdk/Contents/Home/ OpenJDK is a production-ready open-source build of the Java Development Kit, version 12.0.2, an implementation of the Java SE 12.0.

The next step is to add our Java versions to jenv: Restart your terminal to pick up the change. We now add jenv to our terminal by adding the following to.

Looking around the Internet, I discovered jenv which shouldn’t have surprised me as I use pyenv and I’m aware of rbenv too.Īs I use Homebrew, these are the commands I used.įirstly install jenv, the latest Java (15 at this time) and any other versions you need. When working on OpenWhisk, I discovered that it needed a different Java to the one I had installed.

Macos openjdk