Of this abstraction. The values for getRadius() or getCircumference() in the above instance could be stored immediately, or they might be calculated, it would not subject for the caller; the setters could or might not have Unwanted effects; it won't matter to the caller. it's going to work as envisioned https://whitelandurbanresortgurgaon.wordpress.com/2025/07/08/smart-world-one-dxp-sector-113-gurgaon-leads-the-future-of-intelligent-living/