Revers Name Resolution Program code using java

PROGRAM NAME: REVERSE NAME RESOLUTION

In computer networking, reverse DNS lookup or reverse DNS resolution (rDNS) is the determination of a domain name that is associated with a given IP address using the Domain Name Service (DNS) of the Internet.

COMPLIED USING : JAVA JDK or NETBEANS IDE

CODE:

ReverseNameResolution.java

import java.net.*;

import java.util.Scanner;

class ReverseNameResolution {

    public static void main(String[] args) {

        System.out.println("Enter the IP address of the pc :-");

        Scanner in=new Scanner(System.in);

        String ip=in.nextLine();

        InetAddress inetAddress = null;

        // Get the host name given textual representation of the IP address

        try

        {

           inetAddress = InetAddress.getByName(ip);

           // Determines the IP address of a host, given the host's name.

        }

        catch (UnknownHostException e)

        {

            System.out.println("Unknown Host Exception");

            e.printStackTrace();

        }

        // The InetAddress object

        System.out.println("InetAddress object " + ip.toString());

        // Converts this IP address to a String.

        //  Gets the host name for this IP address.

        System.out.println( "Host name of " + ip + " is " + inetAddress.getHostName());

        // Gets the fully qualified domain name for this IP address.

        System.out.println("Canonical host name of " + ip + " is " + inetAddress.getCanonicalHostName());

    }

}

OUTPUT:

Enter the IP address of the pc :-

192.168.100.180

InetAddress object 192.168.100.180

Host name of 192.168.100.180 is I3-05

Canonical host name of 192.168.100.180 is I3-05

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