In Java, can an abstract class have non-abstract methods?
A. Only if the abstract methods are marked as "static"
B. Only if the non-abstract methods are marked as "private"
C. Yes, an abstract class can have both abstract and non-abstract methods
D. No, abstract classes can only have abstract methods
Answer: Option C
This Question Belongs to Java Program >> Interfaces And Abstract Classes
A. A contract specifying a set of methods that a class must implement
B. A class that cannot be instantiated
C. A class that contains only static methods
D. A subclass of the Object class
In Java, can a class implement multiple interfaces?
A. Interfaces cannot be implemented by classes
B. Only abstract classes can implement interfaces
C. No, a class can only implement one interface
D. Yes, a class can implement multiple interfaces
What is the purpose of an abstract class in Java?
A. To declare abstract methods
B. To provide a base class with common methods and fields
C. To make a class final
D. To declare abstract methods
Join The Discussion