java UDP server

package cn.network.demo01;

import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;

import javax.swing.plaf.synth.SynthStyle;

public class UDPService
{
    public static void main(String[] args)throws IOException
    {
        //
        DatagramSocket dSocket = new DatagramSocket(6000);
        
        byte[] data = new byte[1024];
        
        while(true)
        {
            DatagramPacket dPacket = new DatagramPacket(data, data.length);
            
            dSocket.receive(dPacket);
            
            int length = dPacket.getLength();
                    
            System.out.println(new String(data,0,length));
            System.out.println(dPacket.getAddress().getHostAddress() +":ip");
        }
        
        
        
        //dSocket.close();
    }
}