Of this abstraction. The values for getRadius() or getCircumference() in the above mentioned case in point might be saved immediately, or they could be calculated, it would not issue into the caller; the setters could possibly or won't have Unwanted side effects; it doesn't subject towards the caller. @Jenix In https://propertyingurugram.in/whats-in-a-real-estate-projects-name-a-lot-if-it-conjures-images-of-the-pandemic/