netipaddressdatagramclientdemo.java

java程序设计语言源代码

//Example 9 of Chapter 9

import java.io.*;
import java.net.*;

public class NetIpAddressDatagramClientDemo
{
	private static DatagramSocket socket;
	public static void main( String args[] )
	{
		try{
			socket = new DatagramSocket();
		}
		catch( SocketException socketException )
		{
			socketException.printStackTrace();
			System.exit( 1 );
		}
		try{
			byte data[] = new byte[ 100 ];
			DatagramPacket sendPacket = new DatagramPacket( data, 
				data.length, InetAddress.getLocalHost(), 1000 );
			socket.send( sendPacket );
		}
		catch ( IOException ioException )
		{
			ioException.printStackTrace();
		}
		while ( true )
		{
			try{
				byte data[] = new byte[ 100 ];
				DatagramPacket receivePacket = new DatagramPacket( data, data.length );
				socket.receive( receivePacket );
			}
			catch( IOException ioException )
			{
				ioException.printStackTrace();
			}
		}
	}
}