Question

I am very new to Java, and relatively new to programming. I have 3 classes, that are connected.

Class 1: Flight

public class Flight {

    private int flightNumber;
    Passenger passenger1 = null; // two objects?
    Passenger passenger2 = null;
    private int confirmedPassengers = 0;
    Passenger bagsChecked;
    //private boolean bagsLoaded;


    public Flight(int fn, int cf){
        flightNumber = fn;
        //passenger1 = p1;
        //passenger2 = p2;
        confirmedPassengers = cf;
        //bagsChecked = bc;

    }


        public boolean addPassenger(Passenger p){
            if (confirmedPassengers == 0){
                passenger1= p;
                confirmedPassengers+=1;         
                System.out.println("P1 has been added.");
                return true;
            }   

            if (confirmedPassengers == 1){
                passenger2 = p;
                confirmedPassengers+=1;
                System.out.println("P2 has been added");
                return true;
            }

                else{
                    System.out.println("This passenger was not added because the capacity is full.");
                    return false;

                }
        }

    }

Class 2: Passenger

public class Passenger {

    private String name;
    Flight flight;
    private int bagsChecked;
    private String confirmationNumber;


    public Passenger(String n, Flight f, int b, String cn){
        name = n;
        flight = f;
        bagsChecked = b;
        confirmationNumber = cn;
    }

    public boolean hasConfirmation(){
        if (confirmationNumber != null) {
            return true;
        }

        else{
            return false;

        }

    }

}

Class 3: Kiosk:

public class Kiosk {
    private int kioskNumber;

    public Kiosk (int k){
        kioskNumber = k;

    }


    public void checkIn(Passenger p){


        if (p.hasConfirmation() == true) {

            addPassenger(p); // trying to add Passenger here
            System.out.println("Passenger " + p.getName() + ""+ "added in at Kiosk1 ");


        }


    }
}

I am trying to add a Passenger to Flight when the passenger checks in at Kiosk. How can I use the addPassenger method in Flight to add Passenger to Kiosk?

Answer 1

In Kiosk.checkIn():

p.flight.addPassenger(p);

A few recommendations:

When you have a collection of things (like passanger1 and passanger2) you might want to use an array or better yet some form of collection like ArrayList:

ArrayList<Passanger> passangers = new ArrayList<Passanger>(2);

passangers.add(p);
System.out.println(passangers.size());

Also public data members are not very nice. Create setters and getters where you need them, so the code above whould rather look like this (after implementing Passanger.getFlight():

p.getFlight().addPassenger(p);