下面的源代码分为4个文件；

chessClient.java:客户端主程序。

chessInterface.java:客户端的界面。

chessPad.java:棋盘的绘制。

chessServer.java:服务器端。

可同时容纳50个人同时在线下棋，聊天。

没有加上详细注释，不过绝对可以运行，j2sdk1.4下通过。-The following source code is divided into 4 files　chessClient.java: the client main program. chessInterface.java: the client interface. chessPad.java: the drawing board. chessServer.java: server-side. Can accommodate 50 people while playing chess online, chat. No comments with more, but definitely can run, j2sdk1.4 the next pass.