A class that implements an interface but does not declare all of the interface's methods must be declared ________.
A)public.
B)interface.
C)abstract.
D)final.

Question

Quizplus · Accepted Answer

A class that implements an interface but does not declare all of the interface's methods must be declared abstract. This is because abstract classes can declare abstract methods, which are not required to provide an implementation, allowing subclasses to provide their own implementation. Therefore, a class that does not declare all of the interface's methods must be declared abstract to allow for subclasses to implement the remaining methods.

A Class That Implements an Interface but Does Not Declare