1. Verify the default Java version in terminal by running the command: java -version

2. Download the appropriate JDK from Oracle website for Mac OS

3. After installation completes, cd into /usr/libexec from a terminal window

4. From the libexec directory, verify all installed Java versions by running the command: ./java_home -V

5. Open your shell config file

   • zsh & vscode users, run: code ~/.zshrc
   • bash & vscode users, run: code ~/.bash_profile

6. Paste the following in the file: export JAVA_HOME=$(/usr/libexec/java_home -v version_of_your_java)

   • Replace the version_of_your_java with the JDK version you want to set. For example, java version "1.8.0_171" will be 1.8.0_171

7. Save the file

   • If you are using zsh run the command source ~/.zshrc to save changes made to the file

8. Verify the changes by running the command: java -version this should be 1.8