BCS2234 20/10/ 2010 Lab Activities on Inheritance

Design a class named Cube that extends GeometricObject. The class contains:

• One double data field named length with default values 1.0 to denote all sides of the cube.

• A no-arg constructor that creates a default cube.

• A constructor that creates a cube with the specified length.

• The accessor methods for all three data fields.

• A method named getArea() that returns the area/volume of this cube.

area of cube =length*length*length

• A method named getPerimeter() that returns the perimeter of this cube.

perimeter of cube = 12 * length

• A method named toString() that returns a string description for the cube.

• The toString() method is implemented as follows:

return "cube: length = " + length;



Draw the UML diagram that involves the classes Cube and GeometricObject. Implement the class. Write a test program that creates a Cube object with side 5, sets color yellow and filled true, and displays the area, perimeter, color, and whether filled or not.