Configuring the JDK environment variable, with the meaning of each step

Configuring the JDK environment variables

1, new variable name: java_home, Variable value: C:\Program files\java\jdk1.7.0 (variable value is JDK installation path)

2, open path, add variable value:%java_home%\bin;%java_home%\jre\bin ()

3, new variable name: CLASSPATH, Variable value:.; %java_home%\lib\dt.jar;%java_home%\lib\tools.jar (note the first one.)

Note:

1,. Represents the current path,%java_home% is referring to the previously specified java_home;

2,java_home indicates the JDK installation path, which includes folders such as Lib,bin,jre, Tomcat,eclipse, and so on, which need to be dependent on this variable.

3,path allows the system to identify Java commands under any path.

4,classpath is the Java load class or lib path, only the class is in Classpath and the Java command is recognized.

Configuring the JDK environment variable, with the meaning of each step