Your Name: Your Email: Ad Query: ›››More details There are four principle concepts upon which object oriented design and programming rest. They are: Abstraction Polymorphism Inheritance Encapsulation 2.What is Abstraction? Abstraction refers to the act of representing essential features without including the background details or explanations. 3.What is Encapsulation? Encapsulation is a technique used for hiding the properties and behaviors of an object and allowing outside access only as appropriate.
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