Program To Demonstrate Name Resolution Using Java

import java.net.*; import java.*; import java.util.*; class GFG { public static void main(String args[]) throws UnknownHostException { Scanner sc = new Scanner(System.in); System.out.print("Enter the URL for which IP address needs to be fetched : "); // The URL for which IP address needs to be fetched String s = sc.next(); System.out.print("Enter the Ip for which address needs to be fetched : "); // The IP address for which Domain Name needs to be fetched String ips = sc.next(); try { // Fetch IP address by getByName() InetAddress ip = InetAddress.getByName(new URL(s).getHost()); // Print the IP address System.out.println("Public IP Address of: " + ip); //Fetch Domain Name/Server Name by getHostName() System.out.println("Public Address of IP : " + InetAddress.getByName(ips).getHostName()); } catch (MalformedURLException e) { // It means the URL is invalid System.out.println("Invalid URL"); } } }

Output:

Enter the URL for which IP address needs to be fetched : https://www.google.com Public IP Address of: www.google.com/172.217.26.228 Enter the Ip for which address needs to be fetched : 172.217.26.228 Public Address of IP : bom05s09-in-f4.1e100.net