JAVA_HOME is an operating system environment variable that directs a user to the file system location where the JDK or JRE was installed.

Well, you fix this by in the Windows environment variable editor where you can actually add a new system variable. If you know your way around the Windows operating system, you should be able to add ...

What does environment variable actually mean? Find out inside PCMag's comprehensive tech and computer-related encyclopedia.

The JRE is the runtime portion of Java software, which PC users need to run Java WebStart applications from a supported web browser.