Core Java · interview question
Which design principle helps decide whether to use an interface or an abstract class?
Multiple choiceMediumchapter-5-curatedpremiumcore-javacode-reading-with-related-types
Answer and explanation
Correct answer
A. Program to an interface, not an implementation.
Why
Programming to an interface, not an implementation, allows for greater flexibility and reusability of code, as it focuses on defining contracts rather than specific implementations.
Test yourself on Core Java
A free test with instant, explained results. No account needed.
More Core Java questions
- In a console shopping cart application, why might you separate input handling from calculations?
- What happens if a subclass does not implement an abstract method from its superclass?
- Why would you choose to use a switch statement instead of multiple if-else statements for handling order status?
- Which part of the following code is responsible for avoiding an off-by-one error?
- Why can using overly complex methods in an e-commerce application become a problem in production code?
- How can a class implementing an interface with a default method call that method from within an overridden method?