Of the abstraction. The values for getRadius() or getCircumference() in the above mentioned example may be saved directly, or they could be calculated, it isn't going to make a difference to your caller; the setters might or may not have Unwanted side effects; it will not subject on the caller. https://propertyingurugram.in/plotted-developments-the-next-major-real-estate-trend-in-india/