OOP Concepts Booster : Take Your Coding Skills to the Next Level

(Last Updated On: July 26, 2021)

Get Firm Hold on Object-Oriented Programming Concepts using JAVA!

Mastering OOP concepts takes years of experience and real-time practice, but you can master now in no time with the book OOP Concepts Booster – Created and designed uniquely after decades of working with Industrial OOP.

You’ll be a TOP performer for sure – in company, job interviews!

Here’s how it helps you Master:

Following a simple but detailed question & answer format, this book also contains quick notes with practical, real-time examples to enhance your coding skills for industry-level applications. Here’s the book content:

Book: OOPs Concepts

Quick Notes:

1. Class & Object, 2.Constructor, 3. Inheritance, 4. Polymorphism, 5. Interface,6. Abstract Class & Abstract Method, 7. Abstraction & Encapsulation, 8. Singleton Class.

OOP Questions:

 Q-1) What are the memory view of the objects and the references of a class? When is the memory allocated to them cleared and who clears this memory? What is the lifespan of the objects and their references?

Q-2) What is the effect of a private constructor of a class and in what scenarios can it be beneficial?

Q-3) Why are method overloading and method overriding called compile-time and run-time polymorphism respectively? What can be the code example scenarios to illustrate the compile-time and run-time activities?

 Q-4) What are the scenarios where a static method is mandatory?

 Q-5) What can be the issue if you delete a base class method if a subclass overrides it?

 Q-6) Why use the interface reference for subclass objects while the subclass reference works as well?

Q-7) How do polymorphism and inheritance provide extensibility?

Q-8) Why should anyone use constructor overloading? How does this help?

Q-9) How does inheritance help eliminate duplicate code?

Q-10) Why do you need to overload the method if methods with different names do the task as well?

Q-11) What are the multiple ways to reuse the code in OOP?

Q-12) If we can’t create an object of an abstract class, then what is its purpose? What can be the scenarios of uses?

Q-13) How does encapsulation provide security?

Q-14) Are both the concepts of encapsulation and abstraction really related to hiding complexities? Can you Justify your answer?

Q-15) How should we update a new version of an interface, so the existing client’s code does not break?

Q-16) Which one is a good choice if you have an option to choose between an interface and an abstract class and why?

Q-17) What are the main aims of using an interface? Do we really use interface variables? If so, for what?

Q-18) What are impacts if I don’t follow dictum – “Code to the interface, not to the implementation”?

Q-19) How can an “interface” or an “abstract class”, be used to aid in improving the degree of abstraction in the design of a class?

Q-20) Both the composition and aggregation follow the Has-A relationship, then how are they different? Which one should you choose when?

Q-21) In what scenarios inheritance is indispensable? Is it true that inheritance is used for code reuse only? If not, what are the other factors?

Q-22) Is really multi-level inheritance used? What can be an example of it in real-time?

Q-23) How should an interface be designed so that no client is compelled to depend on specifications that it does not use?

Q-24) How can inheritance break the client code, but composition cannot? Illustrate the scenario example of this.

Q-25) What are the good guidelines to choose inheritance or composition?

This book OOP Concepts Booster will teach you industrial uses and pitfalls of oop components, and stop your mind raising doubts.

Here’s how it helps:

  • Gain clarity on OOP complexities.
  • Learn to leverage advanced OOP concepts to effectively build high-quality software.
  • Write more maintainable and flexible code by adapting different OOP features.
  • Enables COLLEGE students and FRESHERS to get industry-level knowledge in NO TIME.
  • Makes JOB SEEKER interviews surprisingly impressive.

The key difference between being a highly skilled programmer and a poor one is your ability to use fluid clean code.

Master and take your coding skills to the next level with OOP Concepts Booster!


Don’t Take My words. See what your friends Say!

View Reviews on Amazon


Technology Author- Kuheli Dey

This is an ultimate book to skyrocket the OOP concepts and coding skills. What makes this book special is, the author has made sure that the readers will find the content familiar with their logical concepts, and novice readers get industry-level knowledge. It has been lots of learning and fun.


Simply, this is an amazing book to leverage the OOP concepts and enhance coding skills. Rakesh has beautifully clarified all the confusing elements of the OOP in a very simple manner that is easy to consume. I loved his dedication to delivering the best for the readers’ benefits. He has gone through multiple iterations with various novice programmers to make the answers of complicated and confusing elements simple to consume and that was awesome. I enjoyed the book a lot and it been a great learning experience.

About Author


Rakesh is a software professional and coding lover having decade years of experience and passionate about designing and developing quality software. He has designed and developed many top industry products. He love having a mindset of generating cost effective flexible and maintainable software products.

He is the Author of two most impacting books:

4 thoughts on “OOP Concepts Booster : Take Your Coding Skills to the Next Level”

  1. Superb work sir,you are doing good work.Actually everybody knows OOPs but its use and the Corners only few could understand I am exited to read that book after your question in the title to check your OOP level.


Leave a Comment