Can anyone explain what data abstraction is all about?

Question

Data abstraction

Answer 1

Abstraction consists of isolating an element from its context or from the rest of the elements that accompany it. In programming, the term refers to the emphasis on "what does it do?" more than the "how do you do it?"

Answer 2

Abstraction refers to the act of representing essential features without including the background details or explanations.....

EXAMPLE:-
In moving car if we want to accelerate speed we are accelerate likewise we want we are putting brake
We don't think or consider how it become speed or how the car has stopped when we put brake

This is known as abstraction
Taking essential
Leaving unnecessary

Answer 3

No I don't think so

Answer 4

Now, how does this relate with abstract class in Java