Configuration of JDK environment variables (for beginners in Java)

One. Right click on desktop computer (win7) (My Computer)

Two. Select the properties that appear below the interface

Three. Select Advanced System Settings

Four. Select Environment variables

Five. Create a new system variable Key:java_home,value:java path such as: D:\Program files\java\jdk1.6.0_31, OK

Six. Create a new system variable Class_path. Key:class_path with a value of.; %java_home%\lib\dt.jar;%java_home%\lib\tools.jar, notice that there is a.;( Dot semicolon)

Seven. You can also configure the path (do not need to create new, just add a semicolon to continue adding the path);%java_home%\bin;

Eight. Run the CMD input Java carriage return and Javac return to the normal configuration

Nine. Just follow the previous 8 steps to configure it.

Configuration of JDK environment variables (for beginners in Java)