Of this abstraction. The values for getRadius() or getCircumference() in the above mentioned case in point may very well be stored directly, or they could be calculated, it isn't going to subject towards the caller; the setters might or may not have Unwanted effects; it doesn't issue to your caller. https://propertyingurugram.in/we-are-evaluating-new-age-technology-into-new-projects-such-as-virtual-assistants-in-store-stylist-robots/