--- The first step in learning java JDK installation and configuration environment variable

1. Download jdk

   Link: https: //pan.baidu.com/s/1FiTGhxdHK0KTFawdkLT26g
   extraction code: zcy0
   I have downloaded the official online face jdk 1.8 and share through Baidu cloud disk

2. Double click the installation package, all the way to the next point installation

JDK 3.win7 under Configuration: configure according to the guidelines in the following link

   Under Win7 how to configure the environment variables java - Baidu experience https://jingyan.baidu.com/article/9f63fb91d87fb0c8400f0e93.html