Consider classes A, B and C, where A is an abstract superclass, B is a concrete class that inherits from A and C is a concrete class that inherits from B. Class A declares abstract method originalMethod, implemented in class B. Which of the following statements is true of class C?
A) Method originalMethod cannot be overridden in class C-once it has been implemented in concrete class B, it is implicitly final.
B) Method originalMethod must be overridden in class C, or a compilation error will occur.
C) If method originalMethod is not overridden in class C but is called by an object of class C, an error occurs.
D) None of the above.

Question

Quizplus · Accepted Answer

None of the statements A, B, or C are true. In Java, once an abstract method is implemented in a concrete subclass, it is not implicitly final and can be overridden in further subclasses. There is no requirement for further subclasses to override it unless the method is abstract again, and calling it without overriding will simply use the implementation from the nearest superclass.

Consider Classes A, B and C, Where a Is an Abstract