Welcome to the Objects and Classes in OOPs MCQs Page

Dive deep into the fascinating world of Objects and Classes in OOPs with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Objects and Classes in OOPs, a crucial aspect of Object Oriented Programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of Objects and Classes in OOPs, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Object Oriented Programming.

Check out the MCQs below to embark on an enriching journey through Objects and Classes in OOPs. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Object Oriented Programming.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Objects and Classes in OOPs. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Objects and Classes in OOPs MCQs | Page 3 of 15

Explore more Topics under Object Oriented Programming

01

OOPs Concept and Features

02

Constructors and Destructors

03

Access Specifiers

04

Class Members

05

Member Functions

06

Inheritance and its Types

07

Exception Handling

08

Objects and Pointers

09

Memory Allocation and Variable Scope

10

Overloading

11

Inbuilt Classes

Q21.

Can a super class object give reference to a subclass method?

No, it is not possible

Maybe, it is possible

No, it’s not possible

No, It’s not possible in few cases only

Discuss

Answer: (c).No, it’s not possible

Q22.

What will be the output of the following code?

import java.awt.Point;
class Testing
{
 public static void main(String[] args)
 {
  Point t1,t2,t3;
  t1=new Point(100,100);
  t2=t1;
  t3=t1;
  t1.x=200;
  t1.y=200;
  t2.x=300;
  t3.y=500;
  System.out.println(“Point 1: ” + p1.x + ”, “ + p1.y);
 }
}

Point 1: 200, 200

Point 1: 100,100

Point 1: 300, 300

Point 1: 300, 500

Discuss

Answer: (d).Point 1: 300, 500

Q23.

If a reference variable is declared final then, _________________

It can never be reassigned to refer to a different object.

It can be assigned to refer to any object anytime

It can never be assigned with any object

It can be assigned with 2 or more objects simultaneously

Discuss

Answer: (a).It can never be reassigned to refer to a different object.

Q24.

Which of the members are referred by this pointer usually (Java)?

Members of class where this is used

Member of the parent class where this is used

Members that are passed as argument to the object

Pointers are not applicable in java

Discuss

Answer: (a).Members of class where this is used

Q25.

How to refer to method of nested class?

enclosingClassObject.innerClassObject.method();

innerClassObject.method();

method();

depends on where the method is being called

Discuss

Answer: (d).depends on where the method is being called

Q26.

How many objects can be referenced from same variables?

One at a time

Many at a time

Many using array name

7 at max at same time

Discuss

Answer: (a).One at a time

Q27.

Java handles memory dynamically and references are deleted as soon as they are out of scope.

True

False

May be

Can't say

Discuss

Answer: (a).True

Q28.

Invoking a method on a particular object is ____________ sending a message to that object.

Different from

Same as

Somewhat similar

Part of

Discuss

Answer: (b).Same as

Q29.

Can reference to an object be returned from a method?

Yes, always possible

Yes, but not always

No, never possible

No, Not possible because referred element would be destroyed

Discuss

Answer: (b).Yes, but not always

Q30.

What does memory allocation for objects mean?

Actual creation and memory allocation for object members

Creation of member functions

Creation of data members for a class

Actual creation and data declaration for object members

Discuss

Answer: (a).Actual creation and memory allocation for object members

Page 3 of 15

Welcome to the Objects and Classes in OOPs MCQs Page

Objects and Classes in OOPs MCQs | Page 3 of 15

Explore more Topics under Object Oriented Programming

OOPs Concept and Features

Constructors and Destructors

Access Specifiers

Class Members

Member Functions

Inheritance and its Types

Exception Handling

Objects and Pointers

Memory Allocation and Variable Scope

Overloading

Inbuilt Classes

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