Progmasters_03-oop_Inheritance

package inheritance;

public abstract class RegularCar {

    protected double regularPrice;
    private int speed;
    private String color;

    public RegularCar(int speed, double regularPrice, String color) {
        this.speed = speed;
        this.regularPrice = regularPrice;
        this.color = color;
    }

    public abstract double getSalePrice();

    public double getRegularPrice() {
        return regularPrice;
    }

    public abstract void getDescription();
}

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package inheritance;

public class Truck extends RegularCar implements Sellable {

    private double weight;

    public Truck(int speed, double regularPrice, String color) {
        super(speed, regularPrice, color);
        this.weight = weight;
    }

    @Override
    public double getSalePrice() {

        return this.weight > 2000 ? super.getRegularPrice() * 0.9 : super.getRegularPrice() * 0.8;
    }

    @Override
    public void getDescription() {
        System.out.println("This is a Track!");
    }
}

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package inheritance;

public class Ford extends RegularCar implements Sellable, Discountable {

    private int year;
    private int manufacturerDiscount;


    public Ford(int speed, double regularPrice, String color) {
        super(speed, regularPrice, color);
    }

    @Override
    public double getSalePrice() {
        return super.getRegularPrice() - this.manufacturerDiscount;
    }

    @Override
    public void getDescription() {
        System.out.println("This is a Ford!");
    }
}

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package inheritance;

public class Sedan extends RegularCar implements Sellable {

    private int length;

    public Sedan(int speed, double regularPrice, String color, int length) {
        super(speed, regularPrice, color);
        this.length = length;
    }

    @Override
    public double getSalePrice() {
        return this.length > 20 ? super.getRegularPrice() * 0.95 : super.getRegularPrice() * 0.9;
    }

    @Override
    public void getDescription() {
        System.out.println("This is a Sedan!");
    }
}

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package inheritance;

public interface Sellable {

    public double getSalePrice();
}

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package inheritance;

public interface Discountable extends Sellable {
    @Override
    double getSalePrice();
}

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package inheritance;

public class Main {
    public static void main(String[] args) {
        Truck truck = new Truck(150, 10000000, "red");
        truck.getDescription();
        System.out.println(truck.getSalePrice());
    }
}