Of this abstraction. The values for getRadius() or getCircumference() in the above case in point could be saved instantly, or they may be calculated, it would not subject to your caller; the setters may well or won't have Uncomfortable side effects; it isn't going to matter to your caller. Google https://propertyingurugram.in/signature-global-buys-nearly-26-acre-land-in-gurugram-to-build-housing-project/