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UDP Example in Java Programming



Client
------------------------------------------------------------------------------------------------------------

package practical8;

import java.net.DatagramPacket;
import java.net.DatagramSocket;


public class Client8 {
   
   
    public static void main (String args[])
    {
        try
        {
       
        // Listening to port 3000
        DatagramSocket dsoc=new DatagramSocket(3000);
       
        // Creating buffer to store 1024 bytes
        byte buff[] = new byte[1024];
       
        // Creating packet that stores the received data
        DatagramPacket dpack = new DatagramPacket(buff,buff.length);
       
        // Receives the packet
        dsoc.receive(dpack);
       
        // Printing what server has sent
        System.out.println(new String(dpack.getData()));
                         
           
       
        }
        catch(Exception e)
        {
            System.out.println(e.toString());
        }
    }
   
}




Server
------------------------------------------------------------------------------------------------------------



package practical8;
import java.net.*;
import java.util.*;
import java.io.*;

public class Server8 {
   

    public static void main(String args[])
    {
     
             
        try
        {
            // Listening to the port 5217 (Opening connection)
            DatagramSocket dsoc = new DatagramSocket(5217);
           
            // Receiver's address
            InetAddress host = InetAddress.getLocalHost();
           
            // What message server wants to send
            String str = "Hi, Amit ... ";
           
            // Creating packet to store the message
            DatagramPacket dp = new DatagramPacket(str.getBytes(),str.length(),host,3000);
           
            // Send the packet
            dsoc.send(dp);
           
            // Close the connection
            dsoc.close();
             
        }
       
       
        catch (Exception e)
        {
            System.out.println(e.toString());
        }
    }
   
}


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