8.1-1_Understanding Inheritance

Question 1

What is Inheritance?

Answer 1

Inheritance is the process by which a class is subscribed as a childclass from another class called parentclass, and by this it automatically includes any accessible (public|protected|default?) members defined in that parent class.

Question 2

What is called a class that inherits from another class?

Answer 2

A subclass or child class

Question 3

What is called a class that the child inherits from?

Answer 3

The superclass or parent class

Question 4

What does single inheritance means?

Answer 4

A class may inherit from only one direct parent class. 
⚠️🤯️ Java doesn't allow multiple inheritance

Question 5

What does multiple inheritance means?

Answer 5

A class may have multiple direct parents.

Question 6

How to prevent a class from being extended?

Answer 6

By marking the class with the final modifier.

Question 7

What happens if you try to define a class that inherits from a final class?

Answer 7

❌ The class will fail to compile.