Core Java · interview question
What happens if a subclass does not implement an abstract method from its superclass?
Multiple choiceEasychapter-5-curatedpremiumcore-javacode-reading-with-related-types
Answer and explanation
Correct answer
A. The subclass must be declared abstract.
Why
If a subclass does not implement an abstract method from its superclass, it must itself be declared abstract, as it does not provide a concrete implementation for all inherited abstract methods.
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?
- 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?
- What keyword is used to inherit class properties in Java?