A collection of Java backend practice projects and coding exercises created to explore and refine skills in:

• Core Object-Oriented Programming (OOP) concepts
• Data structures and algorithms
• Backend development patterns and principles

This repository is part of an ongoing Java skill development and portfolio-building process, with a focus on preparing for backend engineering roles.

Examples and mini-projects covering:

• Classes & Objects
• Inheritance & Interfaces
• Encapsulation & Abstraction
• Polymorphism

Algorithmic challenges and solutions (primarily from LeetCode):

• Arrays & Strings
• HashMaps & Sets
• Recursion & Dynamic Programming
• Sorting & Searching

Small backend-oriented projects simulating real-world concepts:

• User and game management systems
• Data persistence mockups
• System design patterns

• Java 17 (Eclipse Adoptium)
• IntelliJ IDEA for development
• Git & GitHub for version control

• Strengthen Java fundamentals for production-level backend development
• Build a consistent problem-solving portfolio
• Prepare for technical interviews in backend engineering roles

1. Clone the repository:

   git clone https://github.com/<your-username>/JavaPlayground.git

2. Open in IntelliJ IDEA
3. Select the Java 17 SDK
4. Run the desired class with main() method

java oop backend-development data-structures algorithms leetcode-solutions system-design intellij-idea software-engineering

This repository is actively updated as part of a structured backend engineering skill development plan.