My macOS Cheat Sheet

How to set JAVA_HOME on macOS Monterey?

1. First check which shell you are using (either bash or zsh). For zsh shell, we can put the environment variables at ~/.zshenv or ~/.zshrc.

   echo $SHELL
   /bin/zsh
   

2. On Mac OS X 10.5 or later, we can use /usr/libexec/java_home to return the location of the default JDK.

   /usr/libexec/java_home
   /Library/Java/JavaVirtualMachines/amazon-corretto-11.jdk/Contents/Home
   

3. Or list all installed java versions with -V

   % /usr/libexec/java_home -V
   Matching Java Virtual Machines (3):
    17.0.9 (x86_64) "Oracle Corporation" - "Java SE 17.0.9" /Library/Java/JavaVirtualMachines/jdk-17.jdk/Contents/Home
    17.0.9 (x86_64) "Oracle Corporation" - "Oracle GraalVM 17.0.9+11.1" /Library/Java/JavaVirtualMachines/graalvm-jdk-17.0.9+11.1/Contents/Home
    11.0.13 (x86_64) "Amazon.com Inc." - "Amazon Corretto 11" /Library/Java/JavaVirtualMachines/amazon-corretto-11.jdk/Contents/Home
   

4. Open the ~/.zshenv

   nano ~/.zshenv
   

5. Add the following content

   export JAVA_HOME=$(/usr/libexec/java_home)
   

6. Source the file and print the $JAVA_HOME, done.

   source ~/.zshenv
   echo $JAVA_HOME
   /Library/Java/JavaVirtualMachines/amazon-corretto-11.jdk/Contents/Home
   

Install node on macOS

Download the package at the official Node Website. The installation paths are as follows:
Node.js

/usr/local/bin/node

npm

/usr/local/bin/npm

Make sure that /usr/local/bin is in your $PATH.