Of this abstraction. The values for getRadius() or getCircumference() in the above mentioned instance may very well be saved straight, or they may be calculated, it would not matter for the caller; the setters may or may not have Uncomfortable side effects; it doesn't make a difference to your caller. https://propertyingurugram.in/the-dwarka-expressway-is-a-boon-for-the-gurugram-real-estate-market/