windows jdk8

C:\Program Files (x86)\Java\jdk1.8.0_65   //JAVA_HOME
.;%JAVA_HOME%\lib\dt.jar;%JAVA_HOME%\lib\tools.jar;     //classpath 的變量配置
%JAVA_HOME%\bin;%JAVA_HOME%\jre\bin; //path      

C:\Program Files (x86)\Java\jdk1.8.0_65 //JAVA_HOME

.;%JAVA_HOME%\lib\dt.jar;%JAVA_HOME%\lib\tools.jar; //classpath 的變量配置

%JAVA_HOME%\bin;%JAVA_HOME%\jre\bin; //path

javac 不是内部指令報錯解決辦法：

​​https://www.jianshu.com/p/c3d77c2e66c3​​

PATH這倆需要絕對路徑win10

C:\Program Files\Java\jdk1.8.0_131\bin

C:\Program Files\Java\jre1.8.0_131\bin      

classpath:
 .;%JAVA_HOME%\lib;%JAVA_HOME%\lib\tools.jar      

JAVA_HOME:      

C:\Program Files\Java\jdk1.8.0_131