Question

What is an abstract class in OOP?

• A. A class with no methods
• B. A class that cannot be instantiated
• C. A class that can only have private members
• D. More than one of the above

Answer 1

Answer:

B. A class that cannot be instantiated

• An abstract class in object-oriented programming (OOP) is a class that cannot be instantiated on its own and is meant to be subclassed by other classes.
• It may contain abstract methods, which are methods without a body, and concrete methods with implementations.
• Subclasses inheriting from an abstract class must provide implementations for the abstract methods, making it a way to enforce a common interface among multiple classes.