Java Whois App [SOLVED]

Hello Friends I am trying to execute this code for whois application but its giving me error
please help

package network;
import java.net.*;
import java.io.*;

public class Whois {

public static void main(String[] args) throws Exception {

int c;

Socket s =new Socket("internic.net",43);
// Socket s =new Socket("localhost",8080);
// Socket s =new Socket("google.co.in",21);
try
{
InputStream in = s.getInputStream();
OutputStream out= s.getOutputStream();
String str =(args.length==0 ? "google.co.in" : args[0] )+"\n";
byte buf[] = str.getBytes();
out.write(buf);
while ((c=in.read())!=-1)
{
System.out.print((char)c);
}
s.close();
}
catch(Exception e){System.out.println(e);}

 
}

}

When I am trying to compile in command prompt and NetBeans its giving me error:

Exception in thread "main" java.net.ConnectException: Connection refused: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:351)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:213)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:200)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
at java.net.Socket.connect(Socket.java:529)
at java.net.Socket.connect(Socket.java:478)
at java.net.Socket.<init>(Socket.java:375)
at java.net.Socket.<init>(Socket.java:189)
at network.Whois.main(Whois.java:18)


please help me with this code what is reason i am getting this error