Of this abstraction. The values for getRadius() or getCircumference() in the above illustration may be stored directly, or they may be calculated, it will not make a difference into the caller; the setters may or may not have Negative effects; it isn't going to make a difference for the caller. https://propertyingurugram.in/real-estate-developers-offer-flexible-designs-to-cater-to-the-changing-needs-of-homebuyers/