Change the JDK environment variable configuration under Mac

1. Open the terminal

2. If you are configuring an environment variable for the first time, you can use "touch. Bash_profile" To create a hidden configuration file for. Bash_profile (Use the "open-e. Bash_profile" command If you are editing a profile that already exists):

3. Enter the following configuration:

Ava_home=/library/java/javavirtualmachines/jdk1.8.0_40.jdk/contents/home
Path= $JAVA _home/bin: $PATH:.
Classpath= $JAVA _home/lib/tools.jar: $JAVA _home/lib/dt.jar:.
Export Java_home
Export PATH
Export CLASSPATH

Save to close the window.

4. Use "source. Bash_profile" To make the configuration effective

5. Enter echo $JAVA _home to display the path you just configured

Change the JDK environment variable configuration under Mac