Unable to send sms through way2sms using java

My code is like below.I have downloaded jar file of way2sms.

     import com.way2sms.SMS;
     class MsgSender {

     public static void main(String[] args) {
     String Username="xxxxxxxxxx";
     String Password="xxxxxxxxxx";
     String Number="xxxxxxxxxx";
     String Message="Hi";
     String Proxy="";

     SMS smsClient=new SMS();
     smsClient.send( Username, Password, Number, Message,Proxy);
      }
     }

Below one is the link for jar

mediafire.com/download/ztwzzwmfmmz/way2sms-api-4.0.0.jar

I have given my credentials,But after running program it is showing as,

Jul 06, 2015 9:53:06 AM java.util.prefs.WindowsPreferences <init>
WARNING: Could not open/create prefs root node Software\JavaSoft\Prefs at root 0x80000002. Windows RegCreateKeyEx(...) returned error code 5.
Logging in ...
null
Login Failed..`.

Probably you need admin rights to Access System or root node...