Java核心代码例程之：DatagramClientDemo.java

import Java.io.*;

import java.net.*;

/**

* Demonstrates how to Datagram client

*

* @see DatagramServerDemo

***/

public class DatagramClientDemo

{

public static void main(String args[]) throws Exception

{

byte Data[] = new byte[20];

String sendMsg="Hello";

sendMsg.getBytes(0, sendMsg.length(), Data, 0);

// Client on port 4444, Server on 5555

DatagramSocket socket = new DatagramSocket(4444);

DatagramPacket packet = new DatagramPacket(Data, 6,

InetAddress.getByName("localhost"),

5555);

socket.send(packet);

packet = new DatagramPacket(Data, 20);

socket.receive(packet);

String received = new String(packet.getData(), 0);

System.out.println(received);

}

}