Windows Configuration JDK environment

1. New system variables in the JAVA_HOME variable, the variable value: D: \ Program Files \ Java \ jdk1.8.0_161 (fill in according to your installation path)
2. New system variables in classpath variable, the variable value:;% JAVA_HOME% \ lib;% JAVA_HOME% \ lib \ tools.jar
3. Add variable path variable value:;% JAVA_HOME% \ bin;% JAVA_HOME% \ jre \ bin
4. Enter javac command CMD, if normal print usage configuration was successful!
5. View java version of the command: java -version