UDP聊天实现

package edu.wtbu;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetSocketAddress;
import java.net.SocketException;

public class Demo08 {
    public static void main(String[] args) throws IOException {
        DatagramSocket socket = new DatagramSocket();
        while (true){
            BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
            String data = reader.readLine();
            byte[] datas = data.getBytes();

            DatagramPacket packet = new DatagramPacket(datas,0,datas.length,new InetSocketAddress("localhost",6666));
            socket.send(packet);
            if(data.equals("bye")){
                break;
            }

        }
        socket.close();
    }
}

package edu.wtbu;

import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.SocketException;

public class Demo09 {

    public static void main(String[] args) throws IOException {
        DatagramSocket socket = new DatagramSocket(6666);
        while (true) {
            //准备接收包裹
            byte[] bytes = new byte[1024];
            DatagramPacket packet = new DatagramPacket(bytes, 0, bytes.length);
            socket.receive(packet);//阻塞式接收包裹

            byte[] data = packet.getData();
            String datas = new String(data, 0, data.length);
            System.out.println(datas);
            if(data.equals("bye")){
                break;
            }

        }
        socket.close();
    }
}