Question

JAVA ONLY

Design two classes: Flight and Itinerary. The Flight class stores the information about a flight with the

following members:

1. A data field named flightNo of the String type with getter method.

2. A data field named departureTime of the GregorianCalendar type with getter and setter methods.

3. A data field named arrivalTime of the GregorianCalendar type with getter and setter methods.

4. A constructor that creates a Flight with the specified number, departureTime, and arrivalTime.

5. A method named getFlightTime() that returns the flight time in minutes.

The Itinerary class stores the information about itinerary with the following members:

1. A data field named flights of the List<Flight> type. The list contains the flights for the itinerary in increasing order

of departureTime.

2. A constructor that creates an Itinerary with the specified fights.

3. A method named getTotalTravelTime() that returns the total travel time in minutes from the depature time of the

first flight to the arrival time of the last flight in the itinerary.

4. A method named getTotalFlightTime() that returns the sum of the flight time for all flights in the itinerary. The

flight time of a flight is defined as the time from the departure time of the flight until its arrival time.

Test with this code:

public static void main(String[] args) {

List<Flight> flights = new ArrayList<>();

flights.add(new Flight("US230",

new GregorianCalendar(2014, 4, 5, 5, 5, 0),

new GregorianCalendar(2014, 4, 5, 6, 15, 0)));

flights.add(new Flight("US235",

new GregorianCalendar(2014, 4, 5, 6, 55, 0),

new GregorianCalendar(2014, 4, 5, 7, 45, 0)));

flights.add(newFlight("US237",

new GregorianCalendar(2014, 4, 5, 9, 35, 0),

new GregorianCalendar(2014, 4, 5, 12, 55, 0)));

Itinerary itinerary = new Itinerary(flights);

System.out.println(itinerary.getTotalTravelTime());

System.out.println(itinerary.getTotalFlightTime());

}

Answer 1

CODE

============

import java.util.ArrayList;

import java.util.GregorianCalendar;

import java.util.List;

class Flight {

private String flightNo;

private GregorianCalendar departureTime;

private GregorianCalendar arrivalTime;

public Flight(String flightNo, GregorianCalendar departureTime, GregorianCalendar arrivalTime) {

this.flightNo = flightNo;

this.departureTime = departureTime;

this.arrivalTime = arrivalTime;

}

/**

* @return the departureTime

*/

public GregorianCalendar getDepartureTime() {

return departureTime;

}

/**

* @param departureTime the departureTime to set

*/

public void setDepartureTime(GregorianCalendar departureTime) {

this.departureTime = departureTime;

}

/**

* @return the arrivalTime

*/

public GregorianCalendar getArrivalTime() {

return arrivalTime;

}

/**

* @param arrivalTime the arrivalTime to set

*/

public void setArrivalTime(GregorianCalendar arrivalTime) {

this.arrivalTime = arrivalTime;

}

/**

* @return the flightNo

*/

public String getFlightNo() {

return flightNo;

}

public long getFlightTime() {

return (long)(arrivalTime.getTimeInMillis() - departureTime.getTimeInMillis())/60000;

}

}

class Itinerary {

private List<Flight> flights;

public Itinerary(List<Flight> flights) {

this.flights = flights;

}

public long getTotalTravelTime() {

return (flights.get(flights.size()-1).getArrivalTime().getTimeInMillis() - flights.get(0).getDepartureTime().getTimeInMillis())/60000;

}

public long getTotalFlightTime() {

long flightTime = 0;

for (Flight f : flights) {

flightTime += f.getFlightTime();

}

return flightTime;

}

}

public class Main {

public static void main(String[] args) {

List<Flight> flights = new ArrayList<>();

flights.add(new Flight("US230",

new GregorianCalendar(2014, 4, 5, 5, 5, 0),

new GregorianCalendar(2014, 4, 5, 6, 15, 0)));

flights.add(new Flight("US235",

new GregorianCalendar(2014, 4, 5, 6, 55, 0),

new GregorianCalendar(2014, 4, 5, 7, 45, 0)));

flights.add(new Flight("US237",

new GregorianCalendar(2014, 4, 5, 9, 35, 0),

new GregorianCalendar(2014, 4, 5, 12, 55, 0)));

Itinerary itinerary = new Itinerary(flights);

System.out.println(itinerary.getTotalTravelTime());

System.out.println(itinerary.getTotalFlightTime());

}

}