Of this abstraction. The values for getRadius() or getCircumference() in the above instance may be saved directly, or they may be calculated, it isn't going to matter to the caller; the setters may possibly or may not have Unintended effects; it does not subject to the caller. Luigi has in https://propertyingurugram.in/mapsko-group-organises-monsoon-fest-to-showcase-mapsko-mountville/