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这篇文章主要为大家展示了"java如何实现UDP双人交互"，内容简而易懂，条理清晰，希望能够帮助大家解决疑惑，下面让小编带领大家一起研究并学习一下"java如何实现UDP双人交互"这篇文章吧。

发送端

public class my implements Runnable {private DatagramSocket client ;private BufferedReader reader;private String toip; //对方的ipprivate int toport; //对方的端口public my(int port,String toip,int toport){ try { client=new DatagramSocket(port); reader=new BufferedReader(new InputStreamReader(System.in)); this.toip=toip; this.toport=toport; } catch (SocketException e) { e.printStackTrace(); }}public void run(){ while(true) { String s; try { s = reader.readLine(); byte[] datas=s.getBytes(); DatagramPacket packet=new DatagramPacket(datas,0,datas.length,new InetSocketAddress(this.toip,this.toport)); client.send(packet); if(s.equals("bye")) { break; } } catch (IOException e) { e.printStackTrace(); } } client.close();}}

接收端：使用面向对象封装

public class you implements Runnable{private DatagramSocket server;private int port;private String from;public you(int port,String from){ this.port=port; this.from=from; try { server=new DatagramSocket(port); } catch (SocketException e) { e.printStackTrace(); }}public void run(){ while(true) { byte[] container=new byte[1024*60]; DatagramPacket packet=new DatagramPacket(container,0,container.length); try { server.receive(packet); byte[] datas=packet.getData(); int len=packet.getLength(); String data=new String(datas,0,datas.length); System.out.println(from+":"+data); if(data.equals("bye")) { break; } } catch (IOException e) { e.printStackTrace(); } } server.close();}}

加入多线程实现双向交流

public class student {public static void main(String[]args){ new Thread(new my(9999,"localhost",8888)).start();//发送 new Thread(new you(7777,"teacher")).start(); //接收}}public class teacher {public static void main(String[]args){ new Thread(new you(8888,"student")).start();//接收 new Thread(new my(5555,"localhost",7777) ).start();//发送}}以上是"java如何实现UDP双人交互"这篇文章的所有内容，感谢各位的阅读!相信大家都有了一定的了解，希望分享的内容对大家有所帮助，如果还想学习更多知识，欢迎关注行业资讯频道!

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