Inheritance + java

Inheritance is used when the relationship between two classes: _______ relationship.

• "HAS-A"
• "PART-OF-A"
• "IS-A"
• inverse

A class that is inherited is called a ______ .

• superclass

• Subclass

• subsetclass

• Relativeclass

What does polymorphism mean?

• Changing shapes
• Having many forms
• Being unchangeable
• Easy

Which Java statement represents inheritance?

• class body inherit Car

• class body super Car

• class body extends Car

• class body override Car

Which of the following is/are true about inheritance in Java?

I. A subclass inherits all the methods and variables of the superclass.

II. A subclass can override the methods of its superclass

III. A subclass has access to the private instance variables of the superclass.

• I only

• II only

• III only

• I and II only

• I and III only

super keyword is used to access

• only subclass methods

• parent class variables and methods

• subclass variables and methods

• only parent class methods

A class member declared protected becomes a _______member of subclass.

• public

• private

• protected

• default

Which of the following is true about inheritance in Java?

1) Private methods are final.

2) Protected members are accessible within a package and

inherited classes (outside the package).

3) Protected methods are final.

4) Private methods cannot be overridden in derived class.

• 1, 2 and 4

• Only 1 and 2

• 1, 2 and 3

• 2, 3 and 4

Java does not support ___________ inheritance, through classes.

• Multilevel

• Multiple

• Hybrid

• Hierarchical