Register for our webinar

How to Nail your next Technical Interview

1 hour
Loading...
1
Enter details
2
Select webinar slot
*Invalid Name
*Invalid Name
By sharing your contact details, you agree to our privacy policy.
Step 1
Step 2
Congratulations!
You have registered for our webinar
check-mark
Oops! Something went wrong while submitting the form.
1
Enter details
2
Select webinar slot
*All webinar slots are in the Asia/Kolkata timezone
Step 1
Step 2
check-mark
Confirmed
You are scheduled with Interview Kickstart.
Redirecting...
Oops! Something went wrong while submitting the form.
close-icon
Iks white logo

You may be missing out on a 66.5% salary hike*

Nick Camilleri

Head of Career Skills Development & Coaching
*Based on past data of successful IK students
Iks white logo
Help us know you better!

How many years of coding experience do you have?

Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Iks white logo

FREE course on 'Sorting Algorithms' by Omkar Deshpande (Stanford PhD, Head of Curriculum, IK)

Thank you! Please check your inbox for the course details.
Oops! Something went wrong while submitting the form.

Help us with your details

Oops! Something went wrong while submitting the form.
close-icon
Our June 2021 cohorts are filling up quickly. Join our free webinar to Uplevel your career
close
blog-hero-image

Top 25+ OOPS Interview Questions for Experienced Programmers

by Interview Kickstart Team in Interview Questions
March 11, 2024
Coding interviews make you nervous? Learn how to nail them with FAANG+ experts!
You can download a PDF version of  
Download PDF

Top 25+ OOPS Interview Questions for Experienced Programmers

If you're preparing for software engineering interviews, knowing the fundamentals of Object Oriented Programming is essential for solving coding and programming problems. As much as it is important to understand how to leverage OOP concepts in problem-solving, knowing answers to theoretical questions is key too. Expect to be asked many OOPS interview questions for experienced professionals, especially if you're applying for a senior developer or programmer position.

To help you prepare for your upcoming senior developer interview, we’ve compiled a list of the top OOP interview questions for experienced professionals.

If you are preparing for a tech interview, check out our technical interview checklist, interview questions page, and salary negotiation e-book to get interview-ready!

Having trained over 11,000 software engineers, we know what it takes to crack the most challenging tech interviews. Our alums consistently land offers from FAANG+ companies. The highest ever offer received by an IK alum is a whopping $1.267 Million!

At IK, you get the unique opportunity to learn from expert instructors who are hiring managers and tech leads at Google, Facebook, Apple, and other top Silicon Valley tech companies.

Want to nail your next tech interview? Sign up for our FREE Webinar.

Let’s go ahead and look at some commonly-asked OOPs interview questions for experienced professionals.

Here’s what we’ll cover in this article:

  • Top OOPS Interview Questions and Answers for Experienced Professionals
  • OOPS Interview Questions for Experienced Programmers for Practice
  • FAQs on OOPS Interview Questions for Experienced Programmers

Top OOPS Interview Questions and Answers for Experienced Professionals

Knowing answers to commonly asked OOPS interview questions for experienced professionals is important to ace technical interviews.

In this section, we’ll look at some commonly-asked OOPS interview questions and answers for experienced professionals.

Q1. What are the biggest benefits/advantages of using Object-Oriented Programming?

This is one of the most common OOPS interview questions for experienced developers.

Some noteworthy benefits of using Object-Oriented Programming include:

  • OOP allows code to be reused through its feature of inheritance, thereby eliminating code redundancies.
  • The OOP model offers complete clarity in programming expression, thereby allowing developers to perform complex programming tasks with simplicity.
  • OOP has the feature of data binding, thereby allowing data and information to be kept confidential and private.
  • OOP allows data and the code to be bound together through encapsulation, reducing the burden on developers.
  • Polymorphism allows code entities to take multiple forms, allowing developers to perform multiple programming tasks simultaneously.

Q2. What do you understand by Polymorphism in Object-Oriented Programming?

Polymorphism is a feature in OOPs where functions, objects, and variables can take multiple forms. This means that classes can have methods and functions of the same name but perform different functions at a given point. There are two types of Polymorphism - Static Polymorphism and Dynamic Polymorphism.

Q3. What is Inheritance in Object-Oriented Programming?

Inheritance is a core Object-Oriented Programming feature where classes can inherit the properties of other classes. This helps developers form associations while coding, helping them eliminate redundancy in code or code blocks.

Q4. What do you understand by Method Overloading in Object-Oriented Programming?

This is one of the most popular OOPS interview questions for experienced programmers.

Method Overloading is a feature that allows methods to be defined by the same name, but perform different functions within the same class, if the arguments passed are different.

Q5.  What is Data Abstraction in Object-Oriented Programming?

Data Abstraction is another core feature in OOPs that allows developers to display only the relevant information to the user and hide the implementation details. Data ABstraction enables data and information to be kept private and confidential, thereby ensuring the security of the program/application.

Go through Java OOPs Interview Questions to crack coding interviews.

OOPS Interview Questions for Experienced Programmers for Practice

To better understand the type of OOPS questions asked at technical interviews for experienced developers, we’ve compiled this list of 20+ sample OOPS interview questions for experienced developers.

  1. What are Constructors and Destructors?
  2. What do you understand about the Copy Constructor in OOPS?
  3. What are subclasses and superclasses in OOPS?
  4. What is Hybrid Inheritance in OOPS?
  5. Differentiate between the different types of Inheritance in Object-Oriented Programming
  6. What are the main advantages of Data Abstraction in OOPS?
  7. What are some limitations of Inheritance in OOPS?
  8. Explain Method Overriding in OOPS.
  9. What is Operator Overloading? Explain with an example.
  10. What are access specifiers?
  11. What is an abstract class?
  12. What are virtual functions in OOPs?
  13. Explain the differences between Interfaces and Abstract Classes.
  14. Explain Exception handling with an example.
  15. Explain the try-catch block with an example.
  16. Why is the Finalize method used in OO programming?
  17. What do you understand about Garbage Collectors in OOPs?
  18. Explain the various types of Constructors.
  19. Explain the differences between the different types of Inheritance in OOPs
  20. Explain the different types of Polymorphism with appropriate examples.

Practicing these OOPs interview questions for experienced programmers will stand you in good stead for your next programming or developer interview. You can also practice the top Interview Questions on Java OOPS Concepts and some mock interviews for better prep.

FAQs on OOPS Interview Questions for Experienced Professionals

Q1. What type of interviews requires a strong grasp of OOP fundamentals?

Coding interviews, systems design interviews, and SQL interviews require a strong understanding and grasp of OOP fundamentals.  

Q2. What are the core concepts to prepare to answer OOPS interview questions for experienced professionals?

The core concepts to prepare to answer OOPs interview questions for experienced professionals include - Polymorphism, Encapsulation, Abstraction, and Inheritance.

Q3. Are OOPS interview questions for experienced people asked at Java developer interviews?

As Java is an object-oriented programming language, you can expect OOPs interview questions for experienced professionals at senior Java developer interviews.

Q4. Do you need strong OOPs fundamentals to answer coding questions on core data structures and algorithms?

Technical interviews at FAANG+ companies require you to be good at at least one Object Oriented Programming Language to solve coding problems. Hence, it is important to have a stronghold of OOPs fundamentals to solve coding problems on data structures and algorithms at software engineering interviews.

Q5. Which are some programming languages based on the Object-Oriented Programming model?

Some programming languages based on the OOP model include - C++, JavaScript, Python, Scala, Java, and Ruby.

Gear Up for Your Next Technical Interview

Are you getting ready for your upcoming technical interview? Register for our technical interview webinar to get the best guidance and insight from highly experienced professionals on how to crack tough technical interviews and land high-paying offers from the biggest companies.

At Interview Kickstart, we’ve trained thousands of engineers to land lucrative offers at the biggest tech companies. Our instructors, who are FAANG+ hiring managers, know what it takes to nail tough tech interviews at top technology companies.

Register for our FREE webinar to learn more.

Last updated on: 
November 1, 2023
Author
Vartika Rai
Product Manager at Interview Kickstart | Ex-Microsoft | IIIT Hyderabad | ML/Data Science Enthusiast. Working with industry experts to help working professionals successfully prepare and ace interviews at FAANG+ and top tech companies
The fast well prepared banner

Top 25+ OOPS Interview Questions for Experienced Programmers

If you're preparing for software engineering interviews, knowing the fundamentals of Object Oriented Programming is essential for solving coding and programming problems. As much as it is important to understand how to leverage OOP concepts in problem-solving, knowing answers to theoretical questions is key too. Expect to be asked many OOPS interview questions for experienced professionals, especially if you're applying for a senior developer or programmer position.

To help you prepare for your upcoming senior developer interview, we’ve compiled a list of the top OOP interview questions for experienced professionals.

If you are preparing for a tech interview, check out our technical interview checklist, interview questions page, and salary negotiation e-book to get interview-ready!

Having trained over 11,000 software engineers, we know what it takes to crack the most challenging tech interviews. Our alums consistently land offers from FAANG+ companies. The highest ever offer received by an IK alum is a whopping $1.267 Million!

At IK, you get the unique opportunity to learn from expert instructors who are hiring managers and tech leads at Google, Facebook, Apple, and other top Silicon Valley tech companies.

Want to nail your next tech interview? Sign up for our FREE Webinar.

Let’s go ahead and look at some commonly-asked OOPs interview questions for experienced professionals.

Here’s what we’ll cover in this article:

  • Top OOPS Interview Questions and Answers for Experienced Professionals
  • OOPS Interview Questions for Experienced Programmers for Practice
  • FAQs on OOPS Interview Questions for Experienced Programmers

Top OOPS Interview Questions and Answers for Experienced Professionals

Knowing answers to commonly asked OOPS interview questions for experienced professionals is important to ace technical interviews.

In this section, we’ll look at some commonly-asked OOPS interview questions and answers for experienced professionals.

Q1. What are the biggest benefits/advantages of using Object-Oriented Programming?

This is one of the most common OOPS interview questions for experienced developers.

Some noteworthy benefits of using Object-Oriented Programming include:

  • OOP allows code to be reused through its feature of inheritance, thereby eliminating code redundancies.
  • The OOP model offers complete clarity in programming expression, thereby allowing developers to perform complex programming tasks with simplicity.
  • OOP has the feature of data binding, thereby allowing data and information to be kept confidential and private.
  • OOP allows data and the code to be bound together through encapsulation, reducing the burden on developers.
  • Polymorphism allows code entities to take multiple forms, allowing developers to perform multiple programming tasks simultaneously.

Q2. What do you understand by Polymorphism in Object-Oriented Programming?

Polymorphism is a feature in OOPs where functions, objects, and variables can take multiple forms. This means that classes can have methods and functions of the same name but perform different functions at a given point. There are two types of Polymorphism - Static Polymorphism and Dynamic Polymorphism.

Q3. What is Inheritance in Object-Oriented Programming?

Inheritance is a core Object-Oriented Programming feature where classes can inherit the properties of other classes. This helps developers form associations while coding, helping them eliminate redundancy in code or code blocks.

Q4. What do you understand by Method Overloading in Object-Oriented Programming?

This is one of the most popular OOPS interview questions for experienced programmers.

Method Overloading is a feature that allows methods to be defined by the same name, but perform different functions within the same class, if the arguments passed are different.

Q5.  What is Data Abstraction in Object-Oriented Programming?

Data Abstraction is another core feature in OOPs that allows developers to display only the relevant information to the user and hide the implementation details. Data ABstraction enables data and information to be kept private and confidential, thereby ensuring the security of the program/application.

Go through Java OOPs Interview Questions to crack coding interviews.

OOPS Interview Questions for Experienced Programmers for Practice

To better understand the type of OOPS questions asked at technical interviews for experienced developers, we’ve compiled this list of 20+ sample OOPS interview questions for experienced developers.

  1. What are Constructors and Destructors?
  2. What do you understand about the Copy Constructor in OOPS?
  3. What are subclasses and superclasses in OOPS?
  4. What is Hybrid Inheritance in OOPS?
  5. Differentiate between the different types of Inheritance in Object-Oriented Programming
  6. What are the main advantages of Data Abstraction in OOPS?
  7. What are some limitations of Inheritance in OOPS?
  8. Explain Method Overriding in OOPS.
  9. What is Operator Overloading? Explain with an example.
  10. What are access specifiers?
  11. What is an abstract class?
  12. What are virtual functions in OOPs?
  13. Explain the differences between Interfaces and Abstract Classes.
  14. Explain Exception handling with an example.
  15. Explain the try-catch block with an example.
  16. Why is the Finalize method used in OO programming?
  17. What do you understand about Garbage Collectors in OOPs?
  18. Explain the various types of Constructors.
  19. Explain the differences between the different types of Inheritance in OOPs
  20. Explain the different types of Polymorphism with appropriate examples.

Practicing these OOPs interview questions for experienced programmers will stand you in good stead for your next programming or developer interview. You can also practice the top Interview Questions on Java OOPS Concepts and some mock interviews for better prep.

FAQs on OOPS Interview Questions for Experienced Professionals

Q1. What type of interviews requires a strong grasp of OOP fundamentals?

Coding interviews, systems design interviews, and SQL interviews require a strong understanding and grasp of OOP fundamentals.  

Q2. What are the core concepts to prepare to answer OOPS interview questions for experienced professionals?

The core concepts to prepare to answer OOPs interview questions for experienced professionals include - Polymorphism, Encapsulation, Abstraction, and Inheritance.

Q3. Are OOPS interview questions for experienced people asked at Java developer interviews?

As Java is an object-oriented programming language, you can expect OOPs interview questions for experienced professionals at senior Java developer interviews.

Q4. Do you need strong OOPs fundamentals to answer coding questions on core data structures and algorithms?

Technical interviews at FAANG+ companies require you to be good at at least one Object Oriented Programming Language to solve coding problems. Hence, it is important to have a stronghold of OOPs fundamentals to solve coding problems on data structures and algorithms at software engineering interviews.

Q5. Which are some programming languages based on the Object-Oriented Programming model?

Some programming languages based on the OOP model include - C++, JavaScript, Python, Scala, Java, and Ruby.

Gear Up for Your Next Technical Interview

Are you getting ready for your upcoming technical interview? Register for our technical interview webinar to get the best guidance and insight from highly experienced professionals on how to crack tough technical interviews and land high-paying offers from the biggest companies.

At Interview Kickstart, we’ve trained thousands of engineers to land lucrative offers at the biggest tech companies. Our instructors, who are FAANG+ hiring managers, know what it takes to nail tough tech interviews at top technology companies.

Register for our FREE webinar to learn more.

Recession-proof your Career

Recession-proof your Software Engineering Career

Attend our free webinar to amp up your career and get the salary you deserve.

Ryan-image
Hosted By
Ryan Valles
Founder, Interview Kickstart
blue tick
Accelerate your Interview prep with Tier-1 tech instructors
blue tick
360° courses that have helped 14,000+ tech professionals
blue tick
57% average salary hike received by alums in 2022
blue tick
100% money-back guarantee*
Register for Webinar

Recession-proof your Career

Recession-proof your Software Engineering Career

Attend our free webinar to amp up your career and get the salary you deserve.

Ryan-image
Hosted By
Ryan Valles
Founder, Interview Kickstart
blue tick
Accelerate your Interview prep with Tier-1 tech instructors
blue tick
360° courses that have helped 14,000+ tech professionals
blue tick
57% average salary hike received by alums in 2022
blue tick
100% money-back guarantee*
Register for Webinar

Attend our Free Webinar on How to Nail Your Next Technical Interview

Square

Latest Posts

entroll-image
closeAbout usWhy usInstructorsReviewsCostFAQContactBlogRegister for Webinar