Inheritance and Composition Interview Questions | OOPS | NextRound

1What is Inheritance? What is the 'IS-A' relationship?Intermediate

2What are the different types of Inheritance? (Single, Multilevel, Hierarchical)Intermediate

3Why does Java/C# not support Multiple Inheritance of classes? (The Diamond Problem)Intermediate

4How do you solve the Diamond Problem? (Interfaces/Mixins)Intermediate

5What is the difference between 'IS-A' (Inheritance) and 'HAS-A' (Composition)?Intermediate

6Why is Composition often preferred over Inheritance? (Fragile Base Class problem)Intermediate

7Can a subclass access the private members of its parent class?Intermediate

8What is the purpose of the base or super keyword?Intermediate

9Can you prevent a class from being inherited? How? (Sealed/Final)Intermediate

10What happens if a Base class constructor throws an exception? Does the Derived object get created?Intermediate

11Can you change the access modifier of a base class method in a derived class? (Hiding vs Overriding)Intermediate

12What is the difference between 'Overriding' and 'Hiding/Method Shadowing'?Intermediate