In this article, I will demonstrate how to install Java OpenJDK 15 on macOS Catalina in 2020. Download and Install OpenJDK 15 Download the .tar.gz version of OpenJDK 15 from jdk.java.net/15/ and move the file to /Library/Java/JavaVirtualMachines/ on your mac. Then, extract it and delete the archive: sudo mv openjdk-15_osx-x64_bin.tar.gz /Library/Java/JavaVirtualMachines/ cd /Library/Java/JavaVirtualMachines/ sudo tar -xzf openjdk-15_osx-x64_bin.tar.gz sudo rm openjdk-15_osx-x64_bin.tar.gz ...