jdk环境变量的配置

jdk安装在系统盘C盘；

path: (C:\Program Files\Java\jdk1.8.0_25\bin;C:\Program Files\Java\jdk1.8.0_25\jre\bin)

classpath:(.;C:\Program Files\Java\jdk1.8.0_25\lib\tools.jar;C:\Program Files\Java\jdk1.8.0_25\lib\dt.jar;)