Of this abstraction. The values for getRadius() or getCircumference() in the above illustration can be stored instantly, or they may be calculated, it won't issue for the caller; the setters may well or may not have side effects; it does not make a difference into the caller. Properties are practical https://m3mscogurgaon.game.blog/2025/07/08/smart-world-the-edition-gurgaon-combines-peaceful-living-with-city-connectivity/