Java OOP Interview Notes ☕🚀

This is more than a normal notes it is heavy in depth and i am pretty sure you don't need to watch any tutorial, this notes alone is more than that.

If you're preparing for Java interviews, placements, or backend development, having a strong understanding of OOP is essential.

I've been learning Java and created a collection of interview-focused Java OOP notes that I use for learning and revision.

📚 What's Covered?

The notes cover important concepts such as:

• Classes & Objects
• Constructors
• Encapsulation
• Inheritance
• Polymorphism
• Method Overloading & Overriding
• Abstraction
• Abstract Classes
• Interfaces
• final keyword
• Object Class
• Inner Classes
• Wrapper Classes
• Boxing & Unboxing
• And more Java concepts

The goal is to go beyond simply memorizing definitions and understand how these concepts actually work in Java and how they can be discussed in interviews.

🎯 Who is this for?

These notes are useful for:

• College students preparing for placements
• Developers preparing for Java interviews
• Anyone revising Java OOP
• Students learning Java for Spring Boot/backend development

🔗 Full Notes

I've kept the complete notes and examples on GitHub:

https://github.com/Santosh202007/java-notes/tree/main/Java

I'll continue updating the repository as I learn and add more Java concepts.

If you find the notes useful, feel free to ⭐ the repository and share it with someone preparing for Java interviews.

Happy learning! 🚀

java #oop #programming #interview