Java Programming for Complete Beginners - Java 16 - Step 07 - Understanding Inheritance - Why Do We Need It?

This video covers the fundamentals of inheritance in object-oriented programming, including its types and applications.

What is the primary purpose of the 'Person' class in the context of this tutorial?

• To implement abstraction

• To serve as a base class for inheritance

• To demonstrate encapsulation

• To illustrate polymorphism

What additional attributes are added to the 'Student' class that are not present in the 'Person' class?

• Major and GPA

• Address and age

• Department and ID

• College and year

Why is code duplication considered a problem in object-oriented programming?

• It increases the complexity of algorithms

• It makes the code run slower

• It makes maintenance and updates more difficult

• It leads to syntax errors

How does inheritance help in reducing code duplication?

• By enforcing strict data encapsulation

• By providing a way to override methods

• By enabling a class to inherit attributes and methods from another class

• By allowing multiple classes to share the same methods

What keyword is used in Java to implement inheritance?

• derives

• extends

• inherits

• implements

In the 'StudentRunner' class, what is demonstrated about the 'Student' object?

• It cannot access inherited methods

• It can only access inherited methods

• It can access both its own and inherited methods

• It can only access its own methods

What is the relationship between the 'Student' and 'Person' classes called?

• Contains-a relationship

• Is-a relationship

• Uses-a relationship

• Has-a relationship