Java environment variable configuration under Windows

There are three main environment variables used by JAVA under Windows, JAVA_HOME, CLASSPATH, PATH.

1.JAVA_HOME：

1	C:\Program Files\Java\jdk1.7.0_60

2.CLASSPATH：

1	.;%JAVA_HOME%\lib;%JAVA_HOME%\lib\tools.jar

3.Path： 

1	;%JAVA_HOME%\bin;%PATH%

4.cmd test:

1 2 3

java java -version javac

Enter the following command to run normally, the environment variable configuration is successful

http://www.codeblogbt.com/archives/39560