网络象棋对战系统，支持多人登录，分客户端和服务器端，采用Swing加套接字实现，代码简单易懂，适合学习JAVA的人使用-Chess combat system, support network DuoRen login, points the client and the server, the Swing and a socket, easy to understand and to realize the code for learning a JAVA people use