说明：  网络五子棋 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。
(Network Gobang the following source code is divided into four documents chessClient.java: the client main program. chessInterface.java: the client interface. chessPad.java: drawing board. chessServer.java: server-side. Can accommodate 50 people at the same time playing chess online, chat.)