import java.net.*;
import java.io.*;
public class Client extends Thread
{
  public static void main(String[] args)
  {
    
      send();
  }
  
  public static void send()
  {
    try {
      DatagramSocket ds=new DatagramSocket();
      String str="Hello,this is zhangsan";
      DatagramPacket dp=new DatagramPacket(str.getBytes(),str.length(),
                                           InetAddress.getByName("localhost"),
                                           6000);
      ds.send(dp);
      byte[] buf=new byte[100];
      DatagramPacket dpRecv=new DatagramPacket(buf,100);
      ds.receive(dpRecv);
      System.out.println(new String(buf,0,dpRecv.getLength()));
      ds.close();
    }
    catch (Exception ex) {
      ex.printStackTrace();
    }
  }
 }