1. Right-click "computer"-> "properties"-> "Advanced System Settings", and click "environment variables" at the bottom of the pop-up options to go to the "set environment variables" tab. Click create, as shown in step 4. A new system variable setting box will pop up. Enter the JAVA_HOME variable value in the variable name field and enter your jdk installation directory (my name is D: \ jdk7), fill it out, and click OK, as shown in the following figure.
2. next, modify the path, as shown in the following figure. Double-click the path. An edit box is displayed. Add % JAVA_HOME % \ bin; % JAVA_HOME % \ jre \ bin to the value. Click OK and OK.
3. Enter the "java" command in cmd again. If the effect shown in the following figure is displayed, the java configuration is successful (if not, try restarting your computer ).
So far, environment variable configuration is complete.
