(1) New -> variable name "JAVA_HOME", variable value "C: \ Java \ jdk1.8.0_05" ( ie, JDK installation path, do not copy this !!!) (2)
Edit -> variable name "Path" at the end, the original value of the variable plus ";% JAVA_HOME% \ bin;% JAVA_HOME% \ jre \ bin"
(3) New -> variable name "CLASSPATH", variable value ";.% JAVA_HOME% \ lib ;% JAVA_HOME % \ lib \ dt.jar;% JAVA_HOME % \ lib \ tools.jar "
New file saves the following information for the file extension .bat
@echo off
color 0a
echo.------------------------------------
echo.TODO:设置java环境变量
echo.
echo.------------------------------------
::如果有的话，先删除JAVA_HOME
wmic ENVIRONMENT where "name='JAVA_HOME'" delete
::如果有的话，先删除ClASSPATH
wmic ENVIRONMENT where "name='CLASSPATH'" delete
::创建JAVA_HOME VariableValue 后面是JDK的安装路径,自行更改
wmic ENVIRONMENT create name="JAVA_HOME",username="<system>",VariableValue="C:\Program Files\Java\jdk1.8.0_31"
::增加PATH中关于java的环境变量
wmic ENVIRONMENT where "name='Path' and username='<system>'" set VariableValue="%Path%;%JAVA_HOME%\bin;%JAVA_HOME%\jre\bin"
::创建CLASSPATH 此项可加可不加
wmic ENVIRONMENT create name="CLASSPATH",username="<system>",VariableValue=".;%JAVA_HOME%\lib\dt.jar;%JAVA_HOME%\lib\tools.jar;"
pause
