Of the abstraction. The values for getRadius() or getCircumference() in the above mentioned illustration might be stored right, or they may be calculated, it doesn't subject into the caller; the setters might or might not have Unwanted effects; it isn't going to subject to your caller. @Jenix In that situation, https://propertyingurugram.in/spr-revamp-8-flyovers-to-come-up-on-stretch-underpass-at-vatika-chowk/