Udemy_36. PoolArea

public class Rectangle {
    private double width;
    private double length;

    public Rectangle(double width, double length) {
        if(width<0) this.width=0;
        else this.width=width;

        if (length<0) this.length=0;
        else this.length=length;
    }

    public double getWidth() {
        return width;
    }public class Cuboid extends Rectangle {
        private double height;

        public Cuboid(double width, double length, double height) {
            super(width, length);
            this.height = height<0 ? 0 : height;
        }

        public double getHeight() {
            return height;
        }

        public double getVolume() {
            return getArea()*getHeight();
        }
    }

    public double getLength() {
        return length;
    }

    public double getArea(){
        return getLength()*getWidth();
    }
}