Clases/BoxDemo.java - master - GermanezZ/JavaExercises

Clases/BoxDemo.java
117 строк2 KB
germa
Новое упражнение
28 янв 2025, 16:53
28 янв 2025, 16:534a2e79b
package Clases;

public class BoxDemo {

    public static void main(String[] args) {

        Box MyBox = new Box();
        MyBox.setDim(12,3,5);
        MyBox.volume();

        Box myBox1 = new Box();
        myBox1.setDim(3,5,53);
        myBox1.volume();

        BoxWeight myBox2 = new BoxWeight(1,2,4,6);
        myBox2.volume();

        var myBox3 = new BoxWeight(10,20,15,34.3);
        myBox3.volume();

        var myBox4 = new Box();
        myBox4.volume();

        System.out.println();
        System.out.println("//////////////////////////////////////////////////////////////////");
        System.out.println();

        BoxWeight weightbox = new BoxWeight(3,5,7,8.37);
        Box plainbox = new Box();

        weightbox.volume();
        System.out.println("Вес коробки: " + weightbox.weight);
        System.out.println();

        // В этом случае суперклассу plainbox будут доступны только члены, которые определены в суперклассе
        plainbox = weightbox;

        plainbox.volume();

        // Будет ошибка (метода нет в суперклассе)
        //plainbox.weight;

    }

}


class Box{

    private double width;
    private double height;
    private double depth;

    Box(Box ob){
        width = ob.width;
        height = ob.height;
        depth = ob.depth;
    }

    Box(double width, double height, double depth){
        this.width = width;
        this.height = height;
        this.depth = depth;
    }

    Box(){
        width = -1;
        height = -1;
        depth = -1;
    }


    Box(double length){
        width = height = depth = length;
    }

    void setDim(int width, int height, int depth) {
        this.width = width;
        this.height = height;
        this.depth = depth;
    }


    public void volume() {
        System.out.println("Объём коробки равен " + (width * height * depth));
    }

    @Override
    public String toString() {
        return "Box width=" + width + ", height=" + height + ", depth=" + depth;
    }

}


class BoxWeight extends Box{

     double weight;

    BoxWeight(double w, double h, double d, double m){
        super(w,h,d);
        weight = m;
    }



}

class ColorBox extends Box{

    int color;

    public ColorBox(double width, double height, double depth, int color) {
        super(width, height, depth);
        this.color = color;
    }
}