Of this abstraction. The values for getRadius() or getCircumference() in the above mentioned example may very well be stored specifically, or they could be calculated, it does not issue into the caller; the setters could possibly or won't have Unwanted effects; it does not matter into the caller. Be aware: https://propertyingurugram.in/shapoorji-pallonji-group-builds-a-house-for-6-bn-realty-assets-plans-to-take-new-holding-co-public-in-two-years/