Java 游戏的UDP服务器/客户端

我正在尝试制作一个坦克游戏，我在网络部分遇到了问题。我在服务器上做错了什么

这是我的服务器代码：

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

class UDPServer extends Thread{
    private DatagramSocket socket;
    private TanksComponent tank;
    private InetAddress IPAddress;
    private int port = 9876;

    public void UPDServer() throws IOException{
        socket = new DatagramSocket(port);
    }

    public void run(){
        while(true){
            byte[] data = new byte[1024];
            DatagramPacket packet = new DatagramPacket(data, data.length);
            try {
                socket.receive(packet);
            } catch (IOException e) {
                e.printStackTrace();
            }
            System.out.println("RECEIVED: " + packet.getAddress() + " " + packet.getPort() + ": " + new String(packet.getData()) ) ;
            IPAddress = packet.getAddress();
        }
    }
    public void sendData(byte[] data){
        DatagramPacket packet = new DatagramPacket(data, data.length, IPAddress, port);
        try {
            this.socket.send(packet);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

这是我的客户代码：

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

class UDPClient extends Thread{
    private InetAddress ipAddress;
    private DatagramSocket clientSocket;
    private TanksComponent tank;
    private byte[] data = new byte[1024];
    private int port = 9876;

    public UDPClient(TanksComponent tanksComponent) throws SocketException, UnknownHostException{
        this.tank = tanksComponent;
        this.clientSocket = new DatagramSocket();
        this.ipAddress = InetAddress.getLocalHost();
    }
    public void run(){

        DatagramPacket packet = new DatagramPacket(data, data.length);
        try {
            clientSocket.receive(packet);
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();

        }
        String message = new String(packet.getData());
        System.out.println("SERVER > " + message);
    }
    public void sendData(byte[] data){
        DatagramPacket packet = new DatagramPacket(data, data.length, ipAddress, port);
        try {
            clientSocket.send(packet);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

我是这样调用代码的：

 public void start() throws UnknownHostException, SocketException {
      if(JOptionPane.showConfirmDialog(this, "Server") == 0){
            socketServer = new UDPServer();
            socketServer.start();

  }else{
      socketClient = new UDPClient(this);
      socketClient.start();
      System.out.println("Send");
      socketClient.sendData("ping".getBytes());
  }

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谢谢你的帮助，善良的陌生人

我对Java网络没有太多的经验，但不妨看看我最近正在从事的一个项目：

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您选择使用

DatagramSocket

而不是

Socket

有什么原因吗？老实说，我是通过这种方式学会的，我不确定它们之间的区别=/请告诉我下面的答案是否有帮助，或者您是否对此有任何疑问。