JDK环境变量的配置 、、、
1、安装完JDK后配置环境变量 计算机→属性→高级系统设置→高级→环境变量
2、系统变量→新建 JAVA_HOME 变量 。变量值填写jdk的安装目录(我的安装目录是C:program FilesJavajdk1.8.0_121
3、系统变量→寻找 Path 变量→编辑
在变量值最后输入 %JAVA_HOME%in;%JAVA_HOME%jrein;
(注意原来Path的变量值末尾有没有;号,如果没有,先输入;号再输入上面的代码)
4、系统变量→新建 CLASSPATH 变量
变量值填写 .;%JAVA_HOME%lib;%JAVA_HOME%lib ools.jar(注意最前面有一点)
JDK安装路径:
![](https://images2015.cnblogs.com/blog/1066791/201703/1066791-20170314223900901-1326996388.jpg)
JDK安装路径:
![](https://images2015.cnblogs.com/blog/1066791/201703/1066791-20170314223917510-1372755799.jpg)
我的电脑右键属性:
![](https://images2015.cnblogs.com/blog/1066791/201703/1066791-20170314223932135-168701236.jpg)
高级系统设置:
![](https://images2015.cnblogs.com/blog/1066791/201703/1066791-20170314223940635-475396310.jpg)
打开环境变量:
![](https://images2015.cnblogs.com/blog/1066791/201703/1066791-20170314223948635-150901580.jpg)
JDK安装路径:
![](https://images2015.cnblogs.com/blog/1066791/201703/1066791-20170314223959213-1058592979.jpg)
设置JAVA_HOME变量:
![](https://images2015.cnblogs.com/blog/1066791/201703/1066791-20170314224006713-1522162347.jpg)
添加Path变量:
![](https://images2015.cnblogs.com/blog/1066791/201703/1066791-20170314224029823-1976149950.jpg)
设置CLASSPATH变量:
![](https://images2015.cnblogs.com/blog/1066791/201703/1066791-20170314224046573-415956980.jpg)
测试环境变量是否配置正确:
![](https://images2015.cnblogs.com/blog/1066791/201703/1066791-20170314224055463-11294235.jpg)