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Editorial Team
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Asked: 2026-05-26T11:06:05+00:00

I’m preparing to interview and think that would be good if my answer for

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I’m preparing to interview and think that would be good if my answer for the question like “Explain inheritance in java with an example” will be real implementation from core java classes.
There are many examples like Animals hierarchic or Shape but I think it would be more wisdom represent real situation and try answer for question – why this implementation good for this situation.
With that You show that you have good knowledge not just inheritance but and core Java :)))
So what do you think about that??

Addition:
Good another article: What can be the bad example of inheritance in Java?
But in this article question is opposite to my.

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1 Answer

  1. Editorial Team

    The collections framework. It’s good because it contains several kinds of inheritance:

    • List extends Collection, an example of interface inheritance
    • AbstractList implements List, which is implementation rather than inheritance, but is a related idea
    • ArrayList extends AbstractList, an example of class inheritance for implementation reuse

    What i can’t find an example of is class inheritance for the purpose of defining a subtype relationship. However, if you move sideways a little, the java.util package also contains:

    • GregorianCalendar extends Calendar
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