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。
没有加上具体注释，不过绝对可以运行，j2sdk1.4下通过。
/*********************************************************************************************
1.chessClient.java
**********************************************************************************************/
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.net.*;
import java.util.*;
class clientThread extends Thread
{
chessClient chessclient;
clientThread(chessClient chessclient)
{
this.chessclient=chessclient;
}
public void acceptMessage(String recMessage)
{
if(recMessage.startsWith("/userlist "))
{
StringTokenizer userToken=new StringTokenizer(recMessage," ");
int userNumber=0;
chessclient.userpad.userList.removeAll();
chessclient.inputpad.userChoice.removeAll();
chessclient.inputpad.userChoice.addItem("所有人");
while(userToken.hasMoreTokens())
{
String user=(String)userToken.nextToken(" ");
if(userNumber>0 && !user.startsWith("[inchess]"))
{
chessclient.userpad.userList.add(user);
chessclient.inputpad.userChoice.addItem(user);
}
userNumber++;
}
chessclient.inputpad.userChoice.select("所有人");
}
else if(recMessage.startsWith("/yourname "))
{
chessclient.chessClientName=recMessage.substring(10);
chessclient.setTitle("Java五子棋客户端 "+"用户名:"+chessclient.chessClientName);
}
else if(recMessage.equals("/reject"))
{
try
{
chessclient.chesspad.statusText.setText("不能加入游戏");
chessclient.controlpad.cancelGameButton.setEnabled(false);
chessclient.controlpad.joinGameButton.setEnabled(true);
chessclient.controlpad.creatGameButton.setEnabled(true);
}
catch(Exception ef)
{
chessclient.chatpad.chatLineArea.setText("chessclient.chesspad.chessSocket.close无法关闭");
}
chessclient.controlpad.joinGameButton.setEnabled(true);
}
else if(recMessage.startsWith("/peer "))
