Java Programming

Hi, I am able to ping server /ip address. but unable to ping some TNS entry.
There is one way to ping TNS entry using System command, but that will make my code platform dependent. i want platform independent code.. need code help for TNS Ping to database server.. here are my code:
---Code for server / Ip address ping:---------

package DBM;

import java.io.IOException;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.ArrayList;
import oracle.net.TNSAddress.*;



public class PingServer
{
public static void main(String[] args)
{
System.out.println(" Server Pinging Starts...");

ArrayList<String> list=new ArrayList<String>();
list.add("g5u0660c.atlanta.hp.com");
list.add("g1u1675c.austin.hp.com");
list.add("gvu1785.atlanta.hp.com");
list.add("10.130.14.109");
list.add("10.130.0.173");
list.add("DESCRIPTION = (SDU = 32768) (enable = broken) (LOAD_BALANCE = yes) (ADDRESS = (PROTOCOL = TCP)(HOST = gvu1515.atlanta.hp.com)(PORT = 1525))(ADDRESS = (PROTOCOL = TCP)(HOST = gvu1785.atlanta.hp.com)(PORT = 1525)");
list.add("IDSENGI");
//This Ipadd variable is used to convert the arraylist into String
String ipadd="";

try
{
for(String s: list)
{
ipadd=s;
// InetAddress is class.in this class getByName()is used to take only string parameter.
InetAddress inet = InetAddress.getByName(ipadd);
//InetAddress inet1 =InetAddress.getAllByName("IDESENGP");
System.out.println("Sending Ping Request to " + ipadd);
//in InetAddress call IsReachabe(3000)method is used to ping the server IP and if ping is successfully then return true otherwise false.
//IsReachable()take time in millisecond and return type is boolean.

System.out.println("Host is reachable: "+inet.isReachable(3000));
}
System.out.println("Server Pinging program is working fine........");

}
catch (UnknownHostException e)
{
System.err.println("Host does not exists");
}
catch (IOException e)
{
System.err.println("Error in reaching the Host");
}

}
}


----Code for TNS ping using system host----

package DBM;

import java.io.*;

public class doscmd
{
public static void main(String args[])
{
try
{
Process p=Runtime.getRuntime().exec("cmd /c tnsping IDSENGP");
p.waitFor();
BufferedReader reader=new BufferedReader(new InputStreamReader(p.getInputStream()));
String line=reader.readLine();
while(line!=null)
{
System.out.println(line);
line=reader.readLine();
}

}
catch(IOException e1) {}
catch(InterruptedException e2) {}

System.out.println("Done");
}
}
---
The above two codes are working absolutely fine... but need TNS ping program is platform dependent..we need to deploy it in both windows, unix...
Please help.