usr/libexec/java_home: This will show you where the current JDK home is, for example: /Library/Java/JavaVirtualMachines/jdk-10.jdk/Contents/Home If you’ve done any fiddling with different JDK versions on MacOS before, you’ve probably come across the ‘/usr/libexec/java_home’ utility, which composes a number of useful things relating to the JDK that you’re currently using in your PATH. Click here for my previous article about this utility and answers to this StackOverflow post, which includes one of the most extensive and useful guides to running different JDK versions on MacOS that I’ve seen. tar.gz for OpenJDK 11 directly from, there’s no obvious installation instructions (at least that I could find) on the OpenJDK website or in the.