Of the abstraction. The values for getRadius() or getCircumference() in the above example can be saved right, or they could be calculated, it does not subject to your caller; the setters could or won't have Unintended effects; it would not subject to the caller. We’ve witnessed lots of Apple tech https://propertyingurugram.in/m3m-india-to-develop-8-lakh-sq-ft-of-retail-space-in-gurgaon/