Object-oriented programming · interview question
Given a superclass method protected void calculate(), which of the following correctly overrides it in a subclass?
Multiple choiceHardchapter-5-curatedpremiumoopmethod-overriding
Answer and explanation
Correct answer
B. Protected void calculate()
Why
The overridden method must have the same signature, and it must not be more restrictive. It can be less restrictive, so 'protected void calculate()' is a correct override.
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…