datagramserver.java

J2EE第三章实例1

package datagramexample;

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

class DatagramServer{
	
	public static DatagramSocket ds;
	public static int clientport=789,serverport=790;
	
	public static void main(String args[]) throws Exception{
		byte buffer[]=new byte[1024];
		ds=new DatagramSocket(serverport);
		BufferedReader dis=new BufferedReader(new InputStreamReader(System.in));
		System.out.println("server wait for input");
		InetAddress ia=InetAddress.getByName("localhost");
		while(true){
			String str=dis.readLine();
			if((str==null||str.equals("end"))){
				break;
			}
		buffer=str.getBytes();
		ds.send(new DatagramPacket(buffer,str.length(),ia,clientport));
	}
}
}