java combat (a) ------- jdk environment in windows installation and configuration

1, jdk official download

    http://www.oracle.com/technetwork/java/javase/downloads/index.html

点击下载windows的版本：jdk-13.0.1_windows-x64_bin.exe
下载完成之后进行安装，然后进行环境配置

2, the environmental variable settings

    此电脑--属性--高级系统设置--环境变量--系统变量--Path

Add the installation path, and here I downloaded extract can be used directly extract

3, java test test
open a command prompt, type in any address: java or javac

This indicates that the installation was successful jdk in the windows above, we can test