public FlightServiceClass()
 {
     flightXML_ = FlightXMLUtil.getXMLInstance();
     AirportService_ = new Airport.AirportServiceClass();
 }
 public FlightServiceClass()
 {
     flightXML_      = FlightXMLUtil.getXMLInstance();
     AirportService_ = new Airport.AirportServiceClass();
 }