UDP多线程在线聊天

TalkSend

package UdpCommuncation;

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 TalkSend implements Runnable {
    

    DatagramSocket socket=null;
    BufferedReader reader=null;

    private int fromPort;
    private String toIP;
    private int toPort;

    public TalkSend(int fromPort, String toIP, int toPort) {
    
        this.fromPort = fromPort;
        this.toIP = toIP;
        this.toPort = toPort;

        try {
    
             socket=new DatagramSocket(fromPort);
            reader=new BufferedReader(new InputStreamReader(System.in));
        } catch (Exception e) {
    
            e.printStackTrace();
        }
    }

    @Override
    public void run() {
    
        while(true){
    
            String data= null;
            try {
    
                data = reader.readLine();
                byte[] datas=data.getBytes();
                DatagramPacket packet = new DatagramPacket(datas,0,datas.length,new InetSocketAddress(this.toIP,this.toPort));
                socket.send(packet);
                if(data.equals("bye")){
    
                    break;
                }
            } catch (Exception e) {
    
                e.printStackTrace();
            }
        }
    }
}

TalkReceive

package UdpCommuncation;

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

public class TalkReceive implements Runnable{
    

    DatagramSocket socket=null;
    private int port;
    private String msgFrom;

    public TalkReceive( int port,String msgFrom) {
    
        this.port = port;
        this.msgFrom=msgFrom;
        try {
    
            socket=new DatagramSocket(port);
        } catch (SocketException e) {
    
            e.printStackTrace();
        }
    }

    @Override
    public void run() {
    
        while(true){
    

            try {
    
                //准备接收包裹
                byte[] container =new byte[1024];
                DatagramPacket packet=new DatagramPacket(container,0,container.length);
                socket.receive(packet);

                //断开连接，bye
                byte[] data=packet.getData();
                String receiveData=new String(data,0,data.length);
                System.out.println(msgFrom+":"+receiveData);
                if(receiveData.equals("bye")){
    
                    break;
                }
            } catch (IOException e) {
    
                e.printStackTrace();
            }
        }
        }
    }

TalkStudent

package UdpCommuncation;

public class TalkStudent {
    
    public static void main(String[] args) {
    
        //开启两个线程
        new Thread(new TalkSend(7777,"localhost",9999)).start();
        new Thread(new TalkReceive(8888,"老师")).start();

    }
}

TalkTeacher

package UdpCommuncation;

public class TalkTeacher {
    
    public static void main(String[] args) {
    
        new Thread(new TalkSend(5555,"localhost",8888)).start();
        new Thread(new TalkReceive(9999,"学生")).start();
    }
}