NIELIT 2017 July Scientist B (IT) - Section B: 42

Question

Which of the following is false about abstract classes in Java?

• A. If we derive an abstract class and do not implement all the abstract methods, then the derived class should also be marked as abstract using 'abstract' keyword.
• B. Abstract classes can have constructors.
• C. A class can be made abstract without any abstract method.
• D. A class can inherit from multiple abstract classes.

Answer 1

Multiple inheritance through classes isn't allowed through classes, but allowed through interface. D is wrong.

All other are correct.

Good read:

https://www.geeksforgeeks.org/abstract-classes-in-java/