jar包里面带有源码，关键地方都写了注释。

双击run.bat即可看到效果。

如要在本机测试，只需打开两个该程序，并在Client IP地址中填写127.0.0.1即可。-package inside the jar with a source, the key place to write a comment. Double-click run.bat can see the effect. To test this machine, simply open both the program and fill in the Client IP address 127.0.0.1 can be.