Of this abstraction. The values for getRadius() or getCircumference() in the above mentioned case in point might be saved instantly, or they may be calculated, it will not matter towards the caller; the setters might or may not have Unintended effects; it would not make any difference towards the caller. https://propertyingurugram.in/why-demand-for-luxury-housing-is-on-the-rise-an-overview/