Of this abstraction. The values for getRadius() or getCircumference() in the above illustration might be stored right, or they might be calculated, it would not matter towards the caller; the setters could possibly or won't have Unwanted effects; it won't make a difference for the caller. As you may see, https://propertyingurugram.in/elan-group-awards-rs-1000-cr-contract-to-leighton-india-for-construction-of-gurugram-project/