Define abstraction.

Define abstraction.
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Ans. Abstraction means displaying only essential information and hiding the background details of the implementation.
Real Life Example of Abstraction in Java. Abstraction shows only important things to the user and hides the internal details, for example, when we ride a bike, we only know about how to ride bikes but can not know about how it work? And also we do not know the internal functionality of a bike.
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