Library-Manager

A simple console-based Library Management System written in Java.
This project allows users to manage a local file-based database of books using plain text files. It simulates real-world operations such as:

• ✅ Adding new books
• 🔍 Finding a book by ISBN
• 🔄 Updating a book’s quantity
• ❌ Removing a book by ISBN
• 📃 Viewing the entire book collection

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🗂️ Book Format

Each book is stored in library.txt in the following format:

Id: 978-3-16-148410-0
Name: Clean Code
Author: Robert C. Martin
Genre: PROGRAMMING
Avaible: 5
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Books are separated by "---" to mark the end of an entry.

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🧠 Technologies Used

• Java Core
• BufferedReader & BufferedWriter
• Enumerations (enum)
• Console-based user input with Scanner
• File I/O for persistence

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▶️ How to Run

1. Clone the repository or download the files:

   git clone https://github.com/YOUR_USERNAME/LibraryManager.git

2. Make sure the project structure looks like this:

   LibraryManager/
   └── librarymanager/
       ├── BookType.java
       ├── LibraryEntrance.java
       ├── LibraryManager.java
       ├── Main.java
       └── library.txt
   

3. Compile the source code:

   javac librarymanager/*.java

4. Run the application:

   java librarymanager.Main

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💡 Example Usage

===LIBRARY MANAGMENT
1. Add book.
2. Find book.
3. Update book's quantity.
4. Remove book.
5. Show storage.
6. Exit.
Choose: 1

Write id: 978-3-16-148410-0
Write the title: Clean Code
Write the author: Robert C. Martin
Write the genre: programming
Write the quantity: 10
The book has been saved successfully.

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📌 Notes

• Genre is validated against the enum: FANTACY, BIOGRAPHY, SCIENCE, PROGRAMMING, ALGORITHMS, SCRIPTING. If invalid, the genre will default to OTHER.

• The file library.txt must be located inside the librarymanager/ directory.

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🚀 Contributions & Future Ideas

You can improve this project by:

• Adding encryption for secure storage
• Creating a GUI with JavaFX
• Migrating to a database (like SQLite)
• Implementing search/filter by name or author

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👨‍💻 Author

Made with 💻 and ☕ by [Your Name Here].
Feel free to fork, star ⭐, or improve it!