@@ -0,0 +1,427 @@
+/**%0A * Created by hajarboulhdir on 02/10/2016.%0A */%0Apublic class Cuboid extends Shape3D %7B%0A    private double length;%0A    private double width;%0A    private double height;%0A    public double volume()%7B%0A    return (this.length * this.width * this.height);%0A    %7D%0A    public double surface()%7B%0A    return (2*(this.height+ this.width + this.length ));%0A    %7D%0A%0A    @Override%0A    public Point3D getRefPoint() %7B%0A        return null;%0A    %7D%0A%7D%0A

Add Cuboid class.