Remote Host Ping Utility

This Program will display the target remote host name, target remote host address, canonical name and the local host name and IP address. This program will display the details of the target host which are behind the firewall with the help of proxy server. The following is a typical output of this program.

**************OUTPUT****************** 
Target Host Name :ABC.COM 
Target IP Address :111.77.222.100 
Target Host Canonical Name :DEF.SUN.com 
Local Host Name/IP Address :21386DGG2382/123.222.95.112 
**************************************  
 

import java.net.InetAddress;

public class HostPingSpecifications {
 public static void main(String args[]) throws Exception{
  String tagetHost = null;
  String socksProxyHost = null;
  String socksProxyPort = null;

  if(args.length > 2){
   socksProxyHost = args[0];
   socksProxyPort = args[1];
   tagetHost = args[2];
  }else if(args.length > 1){
   socksProxyHost = args[0];
   socksProxyPort = "80";
   tagetHost = args[1];
  }else if(args.length > 0){
   tagetHost = args[0];
  }
  else{
   System.out.println("**************ERROR******************");
   System.out.println("Error:Usage :");
   System.out.println("HostPingSpecifications  socksProxyHost socksProxyPort tagetHost");
   System.out.println("Or");
   System.out.println("HostPingSpecifications socksProxyHost tagetHost");
   System.out.println("Or");
   System.out.println("HostPingSpecifications tagetHost");
   System.out.println("*************************************");
   System.exit(1);
  }
  try{
   if(null != socksProxyHost){
    System.setProperty("socksProxyHost", socksProxyHost);
   }
   if(null != socksProxyPort){
    System.setProperty("socksProxyPort", socksProxyPort);
   }
   if(null != tagetHost){
   InetAddress ip = InetAddress.getByName(tagetHost);
   if(null != ip){
    System.out.println("**************OUTPUT******************");
    System.out.println("Target Host Name   :" + ip.getHostName());
    System.out.println("Target IP Address   :" + ip.getHostAddress());
    System.out.println("Target Host Canonical Name  :" + ip.getCanonicalHostName());
    System.out.println("Local Host Name/IP Address  :" + ip.getLocalHost());
    System.out.println("**************************************");
   }else{
    System.out.println("System returns unknown value null for the target host");
   }
   }else{
    System.out.println("System cannot accept null values for the target host. Please try again.");
   }
  }catch(Exception ex){
   System.out.println("Unknown Error Occurred");
   ex.printStackTrace();
  }
 }
}