returns the departure date of first flight in the format : `` yyyy-mm-dd '' . concode_field_sep Integer totalTravelTime concode_elem_sep ArrayList<Integer> waitTimes concode_elem_sep double totalCost concode_elem_sep String departureDateAsStr concode_elem_sep String origin concode_elem_sep long serialVersionUID concode_elem_sep String destination concode_elem_sep Calendar departureDate concode_elem_sep ArrayList<Flight> flights concode_field_sep void calculateWaitTime concode_elem_sep ArrayList<Flight> getFlights concode_elem_sep Integer getTotalTraveTime concode_elem_sep String getOrigin concode_elem_sep String getDestination concode_elem_sep double getTotalCost concode_elem_sep int hashCode concode_elem_sep boolean equals concode_elem_sep String getDepartureDateAsStr concode_elem_sep String toString concode_elem_sep ArrayList<Integer> getWaitTimes
Calendar function ( ) { return departureDate ; }