Of this abstraction. The values for getRadius() or getCircumference() in the above case in point might be saved instantly, or they could be calculated, it would not matter for the caller; the setters could or won't have Unwanted side effects; it won't matter for the caller. Common getters and setters https://independentvillainnoida.blogspot.com/2025/06/touch-skyline-of-luxury-m3m-altitude.html