我的聊天/文件传输软件代码(----ChatReceiveSocket代码)

/** *//**
 *文字聊天对话框
 *采用DatagramSocket 和DatagramPacket信息
 *接收聊天信息
 */
package chatsocket;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import java.net.*;
import java.io.*;
public class ChatReceiveSocket extends Thread...{
    
    private DatagramSocket receiveSocket;
    private DatagramPacket receivePacket;
    private String receiveMessage;
    /** *//**
     * 初始化
     */
    public ChatReceiveSocket()...{
        try...{        
            jbInit();
        }
        catch(Exception e)...{
            e.printStackTrace();
        }
    }
    
    public void jbInit()...{
                                
        try...{            
            receiveSocket=new DatagramSocket(8000);            
        }
        catch(SocketException e)...{
            e.printStackTrace();
            System.exit(1);
        }
        
    }
    /** *//**
     * 处理接收信息
     */
    public void run()...{
    try...{
       
          byte[] data1=new byte[1024];
          receivePacket=new DatagramPacket(data1,data1.length);
          receiveSocket.receive(receivePacket);
            
              Toolkit.getDefaultToolkit().beep();  
          
          Thread.yield();
          byte[] data2=receivePacket.getData();
          String rece=new String(data2);
          receiveMessage=rece.trim();
                                         
       }
       catch(IOException e)...{
        e.printStackTrace();
    }
   }
   public String getReceiveMessage()...{
          return receiveMessage;
   }    
       
}