Adding a JRE Environment Variable
In Java JRE, you must add a new system environment variable (not a user) for JAVA_HOME:
Variable name: JAVA_HOME
Variable value: C:\Program Files\Java\jre1.8.0_333
Note: The version number shown in the path may change based on the installed JRE version.
Perform the following procedure to add the system environment variable:
Open System Properties and select the Advanced tab. Click Environment Variables.
Under System variables, click New.
Enter the Variable name and Variable value.
Click OK.