Of this abstraction. The values for getRadius() or getCircumference() in the above mentioned case in point might be saved right, or they could be calculated, it will not issue to the caller; the setters may well or won't have Unwanted effects; it isn't going to matter into the caller. Properties https://medium.com/@MaxEstatesGurgaon/strategic-growth-begins-with-m3m-industrial-plots-sector-9-manesar-95ea00e42632