Which of the following statements is correct?
A) Interfaces can define instance variables and methods.
B) Abstract classes can define constants.
C) Interfaces can extend another class.
D) Instances of abstract classes can be created.

Question

Quizplus · Accepted Answer

Abstract classes can define constants, along with methods (both abstract and non-abstract) and instance variables. Interfaces cannot define instance variables or extend classes; they can only declare constants and abstract methods, and they can extend other interfaces. Instances of abstract classes cannot be created directly; they must be instantiated through concrete subclasses.

Which of the Following Statements Is Correct