JAVA使用UDP协议的聊天室源码

以下是一个简单的Java UDP协议的聊天室源码，可以作为参考：

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

public class ChatRoom {
    private DatagramSocket socket;
    private InetAddress address;
    private int port;

    public ChatRoom(String host, int port) throws UnknownHostException, SocketException {
        this.socket = new DatagramSocket();
        this.address = InetAddress.getByName(host);
        this.port = port;
    }

    public void sender(String msg) throws IOException {
        byte[] buf = msg.getBytes();
        DatagramPacket packet = new DatagramPacket(buf, buf.length, address, port);
        socket.send(packet);
    }

    public void receiver() throws IOException {
        byte[] buf = new byte[1024];
        DatagramPacket packet = new DatagramPacket(buf, buf.length);
        socket.receive(packet);
        String msg = new String(packet.getData(), 0, packet.getLength());
        System.out.println("Received: " + msg);
    }

    public static void main(String[] args) throws IOException {
        ChatRoom chatRoom = new ChatRoom("localhost", 4445);
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        while (true) {
            System.out.print("Send: ");
            String msg = reader.readLine();
            if (msg.equals("bye")) {
                break;
            }
            chatRoom.sender(msg);
            chatRoom.receiver();
        }
        chatRoom.socket.close();
    }
}

这是一个简单的聊天室，客户端可以输入消息并通过UDP协议发送给服务器，服务器将消息原样返回给客户端。你可以根据自己的需求修改代码。