Of this abstraction. The values for getRadius() or getCircumference() in the above case in point may very well be saved specifically, or they could be calculated, it doesn't make any difference into the caller; the setters may well or might not have side effects; it doesn't issue to the caller. https://propertyingurugram.in/godrej-properties-to-develop-residential-group-housing-project-in-gurugram/