Switch the java version on your mac

You can switch your Java version on your Mac by following these steps:

1. Check which versions of Java are currently installed on your Mac by opening the Terminal app and typing the following command:
   /usr/libexec/java_home -v
   This will display a list of all the Java versions that are installed on your Mac.
2. Choose the version of Java that you want to use by typing the following command in the Terminal:
   
   export JAVA_HOME=$(/usr/libexec/java_home -v {version_number})
   
   Replace {version_number} with the version number of the Java version, you want to use. For example, if you want to switch to Java 11, you would type:
   export JAVA_HOME=$(/usr/libexec/java_home -v 11)
3. Verify that the correct version of Java is now in use by typing the following command in the Terminal:
   java -version
   
   This will display the version of Java that is currently in use.

Note: These steps will only set the Java version for the current terminal session. If you want to permanently set the Java version, you will need to add the export command to your shell configuration file (e.g. ~/.bashrc or ~/.zshrc).