int firstThree=(int)inSno;
  double secondThree=(inSno-firstThree)*1000;
  boolean same=false;
  double checkDigit=inSno*1000-(int)inSno;

  if(checkDigit>0.0)
  {
  same=false;
  }
  else
  {
      if(firstThree>=100&&firstThree<=300)
      {
      if(secondThree>=001&&secondThree<=999)
      {
          same=true;
      }

      }
  }
  return same;