Permanently Set or Change on Mac (macOS)

You make have noticed that if you use the export command JAVA_HOME = your/java/home/path on the console, it will only be active for the particular session. In order to permanently set $JAVA_HOME, you need to see it in the shell profile file, for Mac running on macOS it should be the .zshrc file,

Steps to Permanently Set $JAVA_HOME on Mac

1. Open Terminal,
2. Type: nano ~/.zshrc (or vi ~/.zshrc if you are a Vi guy!)
3. Now add your JAVA_HOME=/your/java/jdk/home/path, somewhere in the file, if its empty add it at the start (then mostly you just created it :)) if it's not empty, it is good to add as the last line.
4. Save the file (Control + X followed by Y, if using Nano Editor)
5. Now just type zsh to refresh the shell or source ~/.zshrc to reflect the change permanently!