Simple way to configure java environment variables under Win8 system

Java is a programming language used in distributed network environments. The Java language has cross-platform features. The compiled program can run on a variety of operating system platforms, and can achieve a powerful "write once, run everywhere" Features. An environment variable is an object with a specific name that contains information that one or more applications will use. For many engineers who study Java language, it is often necessary to configure the java environment variable, then where to edit under Win8 new system?
Operating method:
1, right click on your computer, select it The properties are fine. As shown below.

2, next, make the choice as shown below.

3. At this time, select Advanced and then select the environment variable.