Project has 3 interfaces i,e
ShapeI that contains calculate area method
Shape2DI that contains calculate perimeter method
Shape3DI that contains calculate volume method
Each class has Calculate area method, prompt and calculate volume or perimeter according to the shape and a parameterless Constructor that calls prompt method.
main.java class has switch in a while loop to create appropriate instances and store the toString method of the object in an arraylist.
triangle class and square class inherit from rectangle class.
cube class inherit from box class.
Ellipse class inherit from circle class.
if user decides to exit the results are printed(each instance toString method).