Java Playground 🚀

This repository is a comprehensive Java study and interview preparation playground.
It covers fundamental concepts, com.playground.advanced topics, design patterns, com.playground.concurrency, and Joshua Bloch’s Effective Java best practices.

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📌 Goals

• Master Software Engineering Fundamentals
• Build strong foundations in Core Java
• Learn Effective Java best practices
• Practice Advanced Java topics
• Prepare for technical interviews
• Provide ready-to-use Java code snippets for reference

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📂 Repository Structure

1. Algorithms

• Sorting (BubbleSort, MergeSort, QuickSort, etc.)
• Searching (Binary Search, Linear Search)
• Dynamic Programming (Fibonacci, Knapsack)
• Graph Algorithms (DFS, BFS, Dijkstra)

2. Data Structures

• Arrays, LinkedList, Stack, Queue
• HashMap, HashSet
• Trees (Binary Tree, BST, Trie)
• Graphs

3. OOP Paradigms

• Encapsulation, Inheritance, Polymorphism, Abstraction
• SOLID Principles
• Clean Code Examples

4. Design Patterns

• Creational: Singleton, Builder, Factory
• Structural: Adapter, Decorator, Proxy
• Behavioral: Strategy, Observer, Command

5. Java Fundamentals

• Collections Framework
• Streams API
• Functional Interfaces & Lambdas
• Generics
• Exception Handling

6. Concurrency

• Threads and Synchronization
• ExecutorService & ForkJoin
• Locks and Semaphores
• CompletableFuture
• Virtual Threads (Java 21+)

7. Advanced Topics

• Reflection API
• Custom Annotations
• Java NIO2 (Files, WatchService)
• Java Modules (JPMS)
• GraalVM & Native Image

8. Effective Java (Joshua Bloch)

• Best practices from Effective Java, 3rd Edition
• Each Item has its own Java example

🛠 How to Use

Clone the repo and explore each module:

git clone https://github.com/<your-username>/java-playground.git
cd java-playground