socket 通訊 服務端

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintStream;
import java.net.ServerSocket;
import java.net.Socket;

public class Servers extends Thread{

 private ServerSocket serverSocket ;
 private Socket socket ;
 public Servers(){
  
  try {
   serverSocket = new ServerSocket(55555);
   System.out.println(" server is Starting....... ");
   socket = serverSocket.accept();
   
   
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  
 }
 public void run() {
  
  InputStream input = null;
  BufferedReader reader = null;
  
  OutputStream output = null;
  PrintStream pw = null;
  try {
//告訴用戶端已經串連上   
   output = socket.getOutputStream();
   pw = new PrintStream(output);
   pw.println("歡迎你的到來："+socket.getRemoteSocketAddress());

//接收用戶端的說話   
   input = socket.getInputStream();
   reader = new BufferedReader(new InputStreamReader(input));
   String line = reader.readLine();
   
   
   
   boolean flag = false;
   
//監視用戶端的說話   
   while( !flag ){
    
    System.out.println(" 用戶端說： "+line);
    
    pw.println(line);
    pw.flush();
    line = reader.readLine();
    
    
   }
    
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
 }
 
 public static void main(String[] args) {
  
  new Servers().start();
  

 }

}