点对点的聊天程序

//Myserver.java
import java.net.*;
import java.io.*;
import java.awt.*;
import java.awt.event.*;
public class MySever implements runnable
{
   SeverSocket sever=null;
   Socket clientSocket;
   boolean flag=true;
   Thread connenThread;
   BufferedReader sin;
   DataOutputStream sout;
   public static void main(String[]args)
   {
       MySever MS=new MySever();
       MS.SeverStart();
   }
   public void SeverStart()
   {
       try
       {
           sever=new SeverSocket(8080);
           System.out.println("端口号:"+sever.getLocalPort());
           While(flag)
           {
               clientSocket=sever.accept();
               System.out.println("连接已经建立完毕！")；
               InputStream is=clientSocket.getInputStream();
               sin=newBufferedReader(new InputStreamReader(is));