Of this abstraction. The values for getRadius() or getCircumference() in the above mentioned illustration may very well be saved right, or they may be calculated, it isn't going to make any difference to the caller; the setters could or won't have side effects; it isn't going to make any difference https://commercialshopgurgaon.wordpress.com/2025/05/12/invest-in-excellence-with-smart-world-the-edition-gurgaon/