datagramserver.java

java网络编程

package udp;


import java.net.*;
import java.io.*;
public class Datagramserver {
    public Datagramserver() {
    }
    public static void main(String args[]) throws IOException {
    	//String host="localhost";
        DatagramSocket s=new DatagramSocket(4023);
        byte [] data=new byte[100];
        DatagramPacket dgp=new DatagramPacket(data,data.length);
     
        while(true){
        	s.receive(dgp);
           s.send(dgp);
        }
   }


}