java 五子棋源程序
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 ")) 
...{
chessclient.chesspad.chessPeerName=recMessage.substring(6);
if(chessclient.isServer) 
...{
chessclient.chesspad.chessColor=1;
chessclient.chesspad.isMouseEnabled=true;
chessclient.chesspad.statusText.setText("请黑棋下子");
}
else if(chessclient.isClient) 
...{
chessclient.chesspad.chessColor=-1;
chessclient.chesspad.statusText.setText("已加入游戏,等待对方下子...");
}
}
else if(recMessage.equals("/youwin")) 
...{
chessclient.isOnChess=false;
chessclient.chesspad.chessVictory(chessclient.chesspad.chessColor);
chessclient.chesspad.statusText.setText("对方退出,请点放弃游戏退出连接");
chessclient.chesspad.isMouseEnabled=false;
}
else if(recMessage.equals("/OK")) 
...{
chessclient.chesspad.statusText.setText("创建游戏成功,等待别人加入...");
}
else if(recMessage.equals("/error")) 
...{
chessclient.chatpad.chatLineArea.append("传输错误:请退出程序,重新加入 ");
}
else 
...{
chessclient.chatpad.chatLineArea.append(recMessage+" ");
chessclient.chatpad.chatLineArea.setCaretPosition(
chessclient.chatpad.chatLineArea.getText().length());
}
}
public void run() 
...{
String message="";
try 
...{
while(true) 
...{
message=chessclient.in.readUTF();
acceptMessage(message);
}
}
catch(IOException es) 
...{
}
}
} 

public class chessClient extends Frame implements ActionListener,KeyListener 
...{
userPad userpad=new userPad();
chatPad chatpad=new chatPad();
controlPad controlpad=new controlPad();
chessPad chesspad=new chessPad();
inputPad inputpad=new inputPad();
Socket chatSocket;
DataInputStream in;
DataOutputStream out;
String chessClientName=null;
String host=null;
int port=4331;
boolean isOnChat=false; //在聊天?
boolean isOnChess=false; //在下棋?
boolean isGameConnected=false; //下棋的客户端连接?
boolean isServer=false; //如果是下棋的主机
boolean isClient=false; //如果是下棋的客户端
Panel southPanel=new Panel();
Panel northPanel=new Panel();
Panel centerPanel=new Panel();
Panel westPanel=new Panel();
Panel eastPanel=new Panel();
chessClient() 
...{
super("Java五子棋客户端");
setLayout(new BorderLayout());
host=controlpad.inputIP.getText();
westPanel.setLayout(new BorderLayout());
westPanel.add(userpad,BorderLayout.NORTH);
westPanel.add(chatpad,BorderLayout.CENTER);
westPanel.setBackground(Color.pink);
inputpad.inputWords.addKeyListener(this);
chesspad.host=controlpad.inputIP.getText();
centerPanel.add(chesspad,BorderLayout.CENTER);
centerPanel.add(inputpad,BorderLayout.SOUTH);
centerPanel.setBackground(Color.pink);
controlpad.connectButton.addActionListener(this);
controlpad.creatGameButton.addActionListener(this);
controlpad.joinGameButton.addActionListener(this);
controlpad.cancelGameButton.addActionListener(this);
controlpad.exitGameButton.addActionListener(this);
controlpad.creatGameButton.setEnabled(false);
controlpad.joinGameButton.setEnabled(false);
controlpad.cancelGameButton.setEnabled(false);
southPanel.add(controlpad,BorderLayout.CENTER);
southPanel.setBackground(Color.pink);
addWindowListener(new WindowAdapter() 
...{
public void windowClosing(WindowEvent e) 
...{
if(isOnChat) 
...{
try 
...{
chatSocket.close();
}
catch(Exception ed) 
...{
}
}
if(isOnChess || isGameConnected) 
...{
try 
...{
chesspad.chessSocket.close();
}
catch(Exception ee) 
...{
}
}
System.exit(0);
}
public void windowActivated(WindowEvent ea) 
...{
}
});
add(westPanel,BorderLayout.WEST);
add(centerPanel,BorderLayout.CENTER);
add(southPanel,BorderLayout.SOUTH);
pack();
setSize(670,548);
setVisible(true);
setResizable(false);
validate();
} 
public boolean connectServer(String serverIP,int serverPort) throws Exception 
...{
try 
...{
chatSocket=new Socket(serverIP,serverPort);
in=new DataInputStream(chatSocket.getInputStream());
out=new DataOutputStream(chatSocket.getOutputStream());
clientThread clientthread=new clientThread(this);
clientthread.start();
isOnChat=true;
return true;
}
catch(IOException ex) 
...{
chatpad.chatLineArea.setText("chessClient:connectServer:无法连接,建议重新启动程序 ");
}
return false;
}
public void actionPerformed(ActionEvent e) 
...{
if(e.getSource()==controlpad.connectButton) 
...{
host=chesspad.host=controlpad.inputIP.getText();
try 
...{
if(connectServer(host,port)) 
...{
chatpad.chatLineArea.setText("");
controlpad.connectButton.setEnabled(false);
controlpad.creatGameButton.setEnabled(true);
controlpad.joinGameButton.setEnabled(true);
chesspad.statusText.setText("连接成功,请创建游戏或加入游戏");
}
}
catch(Exception ei) 
...{
chatpad.chatLineArea.setText("controlpad.connectButton:无法连接,建议重新启动程序 ");
}
}
if(e.getSource()==controlpad.exitGameButton) 
...{
if(isOnChat) 
...{
try 
...{
chatSocket.close();
}
catch(Exception ed) 
...{
}
}
if(isOnChess || isGameConnected) 
...{
try 
...{
chesspad.chessSocket.close();
}
catch(Exception ee) 
...{
}
}
System.exit(0);
}
if(e.getSource()==controlpad.joinGameButton) 
...{
String selectedUser=userpad.userList.getSelectedItem();
if(selectedUser==null || selectedUser.startsWith("[inchess]") ||
selectedUser.equals(chessClientName)) 
...{
chesspad.statusText.setText("必须先选定一个有效用户");
}
else 
...{
try 
...{
if(!isGameConnected) 
...{
if(chesspad.connectServer(chesspad.host,chesspad.port)) 
...{
isGameConnected=true;
isOnChess=true;
isClient=true;
controlpad.creatGameButton.setEnabled(false);
controlpad.joinGameButton.setEnabled(false);
controlpad.cancelGameButton.setEnabled(true);
chesspad.chessthread.sendMessage("/joingame "+userpad.userList.getSelectedItem()+" "+chessClientName);
}
}
else 
...{
isOnChess=true;
isClient=true;
controlpad.creatGameButton.setEnabled(false);
controlpad.joinGameButton.setEnabled(false);
controlpad.cancelGameButton.setEnabled(true);
chesspad.chessthread.sendMessage("/joingame "+userpad.userList.getSelectedItem()+" "+chessClientName);
}
}
catch(Exception ee) 
...{
isGameConnected=false;
isOnChess=false;
isClient=false;
controlpad.creatGameButton.setEnabled(true);
controlpad.joinGameButton.setEnabled(true);
controlpad.cancelGameButton.setEnabled(false);
chatpad.chatLineArea.setText("chesspad.connectServer无法连接 "+ee);
}
}
}
if(e.getSource()==controlpad.creatGameButton)
