Top 100 Java Interview Questions & Practice Codes

🚀 This repository contains the Top 100 Java coding questions frequently asked in interviews. It is designed to help beginners and job seekers improve their coding skills, master logic building, and crack technical interviews.

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📌 Topics Covered

• Basic Java Programs
• Arrays & Strings
• Searching & Sorting
• Recursion
• OOPs Concepts Coding
• Linked List
• Stack & Queue
• Trees & Graphs
• Dynamic Programming
• SQL + Java Based Questions
• Multithreading & Exception Handling
• System Design Mini Exercises (Java Specific)

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🧑‍💻 How to Use

1. Try solving the problem yourself first
2. Compare your solution with the code in this repo
3. Read explanations and optimize your code
4. Practice daily for best results

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📂 Folder Structure

📁 top-100-java-interview
│
├── Basic_Programs
├── Arrays
├── Strings
├── Searching_Sorting
├── Recursion
├── LinkedList
├── Stack_Queue
├── Trees
├── Graphs
├── Dynamic_Programming
├── OOPs_Concepts
└── Multithreading_ExceptionHandling

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🔥 Problem List (Work in Progress)

Each section includes problem statement + solution + explanation.

No.	Topic	Problem	Status
1	Basic	Hello World Program	✔️ Done
2	Basic	Leap Year Check	✔️ Done
3	Basic	Factorial Number	⏳ Adding
4	Array	Find Largest Element	⏳ Adding
5	Array	Reverse an Array	⏳ Adding
...	...	...	...
100	DP	TBD	📌 Planned

🔄 This list will be updated regularly.

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🛠️ Requirements

• Java 8 or above
• Any IDE (IntelliJ IDEA, VS Code, Eclipse) or simple terminal

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🤝 Contribute

Want to contribute?

1. Fork the repo
2. Add your code in the respective folder
3. Create a Pull Request

All valid & optimized solutions are welcome! 💡

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📬 Contact

For queries, suggestions, or collaboration: 📧 Email: (Add Later) 💼 Linkedin: (Add Link Later)

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⭐ If this repo helps you, don’t forget to give it a star!