Object-oriented programming · interview question
Why might you choose an abstract class over an interface in Java?
Multiple choiceEasychapter-5-curatedpremiumooppolymorphism
Answer and explanation
Correct answer
B. To provide shared code among related classes
Why
An abstract class is chosen over an interface when you want to provide shared code among related classes. Abstract classes can have concrete methods, constructors, and fields, which allows for code reuse.
Test yourself on Object-oriented programming
A free test with instant, explained results. No account needed.
More Object-oriented programming questions
- In a typical e-commerce application, how should a CartItem object access the price of a Product?
- What design principle is violated if a Cart class directly manipulates a Product's price?
- Why might CartItem hold a Product reference instead of copying every product field into loose variables?
- In the context of e-commerce, which class is most likely to contain a method called calculateTotalPrice()?
- What access modifier should be used for fields to adhere to encapsulation principles?
- How would you explain a key reason to use encapsulation when designing an object with multiple responsibilities in an…