OpenJDK 11+ on MacOS X
Manually downloading, extracting and configuring the installation of OpenJDK 11+ is a high-maintenance exercise. Particularly if you need to install and switch between multiple versions of the JDK.
The following options for installing OpenJDK 11+ and switching between versions make the job easier..
Install with Jabba
Jabba is a Java version manager inspired by nvm (Node.js) written in Go.