DNSClient.java

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;

public class DNSClient {

    public static void main(String[] args) {
        try {
            DatagramSocket socket = new DatagramSocket();
            InetAddress serverAddress = InetAddress.getByName("localhost");

            BufferedReader userInput = new BufferedReader(new InputStreamReader(System.in));

            System.out.print("Enter domain name or URL: ");
            String domainName = userInput.readLine().trim();

            byte[] sendData = domainName.getBytes();
            byte[] receiveData = new byte[1024];

            DatagramPacket sendPacket = new DatagramPacket(sendData, sendData.length, serverAddress, 9876);
            socket.send(sendPacket);

            DatagramPacket receivePacket = new DatagramPacket(receiveData, receiveData.length);
            socket.receive(receivePacket);

            String ipAddress = new String(receivePacket.getData(), 0, receivePacket.getLength());
            System.out.println("IP Address: " + ipAddress);

            socket.close();

        } catch (Exception e) {
            System.out.println(e);
        }
    }
}