必然可以。jdk原生支持，DatagramSocket
或者用netty
【 在 KEL 的大作中提到: 】
: 怎么实现呢？
--
FROM 1.202.162.*

UDP_Client.java

import java.io.*;
import java.net.*;
  
class UDPClient {
    public static void main(String args[]) throws Exception
    {
  
      BufferedReader inFromUser =
        new BufferedReader(new InputStreamReader(System.in));
  
      DatagramSocket clientSocket = new DatagramSocket();
      
      byte[] bs = new byte[] { (byte) 192, (byte) 168, 2, 100 };
  
      InetAddress IPAddress = InetAddress.getByAddress(bs);
  
      byte[] sendData = new byte[1024];
      byte[] receiveData = new byte[1024];
  
      String sentence = inFromUser.readLine();
      sendData = sentence.getBytes();        
      
      DatagramPacket sendPacket =
         new DatagramPacket(sendData, sendData.length, IPAddress, 9876);
  
      clientSocket.send(sendPacket);
  
      DatagramPacket receivePacket =
         new DatagramPacket(receiveData, receiveData.length);
  
      clientSocket.receive(receivePacket);
  
      String modifiedSentence =
          new String(receivePacket.getData());
  
      System.out.println("FROM SERVER:" + modifiedSentence);
      clientSocket.close();
      }
}
--
修改:sinclair6 FROM 218.249.50.*
FROM 218.249.50.*