Of the abstraction. The values for getRadius() or getCircumference() in the above illustration could be saved directly, or they could be calculated, it doesn't make any difference for the caller; the setters could or might not have Unintended effects; it doesn't make a difference to the caller. Can't set EPPlus https://propertyingurugram.in/gurugrams-real-estate-to-get-a-boost-with-the-advent-of-metro-project/