Configure the JDK environment variables (in the steps to see how to configure environment variables)
New variable name: java_home, Variable value: C:\Program files\java\jdk1.7.0
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:
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.
Test JDK
Enter the Javac,java,javadoc command under the cmd command: A graphical interface appears indicating that the installation was successful.
Java JDK Windows environment variable configuration
