Program to implement DNS in java (Domain Name Server) using java code with output

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

public class DNS 
{
public static void main(String[] args) 
{
int n;
BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
do
{
System.out.println("\n Menu: \n 1. DNS 2. Reverse DNS 3. Exit \n");
System.out.println("\n Enter your choice");
n = Integer.parseInt(System.console().readLine()); 
if(n==1)
{
try 
{
System.out.println("\n Enter Host Name ");
String hname=in.readLine();
InetAddress address;
address = InetAddress.getByName(hname);
System.out.println("Host Name: " + address.getHostName());
System.out.println("IP: " + address.getHostAddress());
} 
catch(IOException ioe) 
{
ioe.printStackTrace();
}
}
if(n==2)
{
try 
{
  System.out.println("\n Enter IP address");
  String ipstr = in.readLine();
  InetAddress ia = InetAddress.getByName(ipstr);
  System.out.println("IP: "+ipstr);
  System.out.println("Host Name: " +ia.getHostName());
} 
catch(IOException ioe) 
{
ioe.printStackTrace();
}
}
}while(!(n==3));
}
}