Module 4

Question 1

The process where one class acquires the properties (methods and fields) of another.

Answer 1

Inheritance

Question 2

Categories of Inheritance :

Answer 2

• Superclass (Parent)
• Subclass (Child)

Question 3

is the keyword used to inherit the properties of a class.

Answer 3

Extends

Question 4

• It is used to differentiate the members of superclass from the members of subclass, if they have same names.
• It is used to invoke the superclass constructor
  from subclass.

Answer 4

The super keyword

Question 5

This keyword checks whether an object is an instance of a specific class or an
interface.

Answer 5

The instanceof keyword

Question 6

• This keyword is used with classes to inherit the properties of an interface.
• Interfaces can never be extended by a class.

Answer 6

The implements keyword

Question 7

is a completely “abstract class” that is used to group related methods with empty
bodies.

Answer 7

Interface

Question 8

Types of Inheritance :

Answer 8

• Single Inheritance
• Multi Level Inheritance
• Hierarchical Inheritance
• Multiple Inheritance

Question 9

means to override the functionality of
an existing method.

Answer 9

Overriding