Cube.java

public class Cube extends Matter {
	private int edge = 1;
	double mass = 12;

	public Cube(int edge) {
		this.edge = edge;
	}

	// abstract getMass ve getVolume dolduruluyor.
	public double getMass() {
		return mass;
	}

	public void setMass(double mass) {
		this.mass = mass;
	}

	public double getVolume() {
		return edge * edge * edge;
	}

	public static void main(String[] args) {
		Sphere s = new Sphere(10);
		s.setMass(10);
		Cube c = new Cube(5);
		c.setMass(2);
		System.out.println(s.getDensity());
		System.out.println(c.getDensity());
	}

}