Tugas Pertemuan 12 - 5025231186

Agym Kamil Ramadhan   

5025231186

Polymorphism Plane Ticket

Penjelasan:

1. Base Class (PlaneTicket):

   • Merupakan kelas abstrak dengan metode abstrak calculatePrice() yang harus diimplementasikan oleh setiap subclass.
   • Memiliki metode umum displayTicketDetails() untuk menampilkan informasi tiket.

2. Subclass:

   • EconomyClassTicket: Menghitung harga tiket berdasarkan harga dasar.
   • BusinessClassTicket: Menambahkan biaya layanan ke harga dasar.
   • FirstClassTicket: Menambahkan pajak kemewahan ke harga dasar.

3. Polymorphism:

• Polymorphism digunakan saat kita memanggil calculatePrice() pada objek PlaneTicket tanpa mengetahui tipe spesifiknya. Setiap subclass memiliki implementasi yang berbeda untuk metode ini.

// Base class: PlaneTicket
abstract class PlaneTicket {
    protected String passengerName;
    protected String flightNumber;

    public PlaneTicket(String passengerName, String flightNumber) {
        this.passengerName = passengerName;
        this.flightNumber = flightNumber;
    }

    // Abstract method for calculating the ticket price
    public abstract double calculatePrice();

    // General method for displaying ticket details
    public void displayTicketDetails() {
        System.out.println("Passenger Name: " + passengerName);
        System.out.println("Flight Number: " + flightNumber);
        System.out.println("Ticket Price: $" + calculatePrice());
    }
}

// Economy Class Ticket
class EconomyClassTicket extends PlaneTicket {
    private double basePrice;

    public EconomyClassTicket(String passengerName, String flightNumber, double basePrice) {
        super(passengerName, flightNumber);
        this.basePrice = basePrice;
    }

    @Override
    public double calculatePrice() {
        return basePrice;
    }
}

// Business Class Ticket
class BusinessClassTicket extends PlaneTicket {
    private double basePrice;
    private double serviceCharge;

    public BusinessClassTicket(String passengerName, String flightNumber, double basePrice, double serviceCharge) {
        super(passengerName, flightNumber);
        this.basePrice = basePrice;
        this.serviceCharge = serviceCharge;
    }

    @Override
    public double calculatePrice() {
        return basePrice + serviceCharge;
    }
}

// First Class Ticket
class FirstClassTicket extends PlaneTicket {
    private double basePrice;
    private double luxuryTax;

    public FirstClassTicket(String passengerName, String flightNumber, double basePrice, double luxuryTax) {
        super(passengerName, flightNumber);
        this.basePrice = basePrice;
        this.luxuryTax = luxuryTax;
    }

    @Override
    public double calculatePrice() {
        return basePrice + luxuryTax;
    }
}

// Main class for testing
public class PlaneTicketDemo {
    public static void main(String[] args) {
        // Polymorphism in action
        PlaneTicket economyTicket = new EconomyClassTicket("Alice", "FL123", 200);
        PlaneTicket businessTicket = new BusinessClassTicket("Bob", "FL456", 500, 100);
        PlaneTicket firstClassTicket = new FirstClassTicket("Charlie", "FL789", 1000, 300);

        // Display ticket details
        economyTicket.displayTicketDetails();
        System.out.println();

        businessTicket.displayTicketDetails();
        System.out.println();

        firstClassTicket.displayTicketDetails();
    }
}