Of this abstraction. The values for getRadius() or getCircumference() in the above case in point may be saved immediately, or they may be calculated, it doesn't matter for the caller; the setters may well or won't have Unwanted side effects; it isn't going to make any difference to your caller. https://propertyingurugram.in/haryana-rolls-out-new-retirement-housing-policy-for-senior-citizens/