udprecv.java

java 简单tcp socket 编程 简单实用

import java.net.*;
public class UdpRecv
{
	public static void main(String [] args) throws Exception
	{
		DatagramSocket	ds=new DatagramSocket(3000);
		byte [] buf=new byte[1024];
		DatagramPacket dp=new DatagramPacket(buf,1024);
		ds.receive(dp);
		String strRecv=new String(dp.getData(),0,dp.getLength()) +
		" from " + dp.getAddress().getHostAddress()+":"+dp.getPort(); 
		System.out.println(strRecv);
		ds.close();
	}
}