java jdk environment variables

1. create system variable

2. edit the system path

note: ;%JAVA_HOME%\bin;%JAVA_HOME%\jre\bin;

3. create classpath

 note:  .;%JAVA_HOME%\lib;%JAVA_HOME%\jre\lib;

原文：https://www.cnblogs.com/jijm123/p/15220170.html