Of this abstraction. The values for getRadius() or getCircumference() in the above mentioned illustration can be stored specifically, or they could be calculated, it does not subject into the caller; the setters may well or won't have Unwanted side effects; it does not make a difference for the caller. 世界最大の検索エンジン、オンライン広告、クラウドコンピューティング、ソフトウェア、... https://propertyingurugram.in/office-markets-in-seven-cities-have-potential-space-of-284-million-sq-ft-jll/