📚 Library Management System

A Java console application to manage books with basic operations and file persistence.

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🚀 Features

• ➕ Add New Book: Add books with title, author, ISBN, and release year. New books are available by default.
• 📋 List All Books: View all books with details and availability status.
• 🔍 Search by Title: Find a book using its title.
• 📦 Check Out Book: Mark a book as checked out (unavailable).
• 🔄 Return Book: Mark a checked out book as available.
• 💾 Data Persistence: Uses books.txt file to save and load books across sessions.

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🛠 Technologies Used

• ☕ Java – Core application logic
• 🧰 Java Collections (ArrayList) – To store and manage book objects
• 💾 File I/O (books.txt) – For saving and loading books permanently
• 🧱 OOP (Object-Oriented Programming) – Classes like Book, SaveBook, etc.
• ⌨️ Scanner – To receive user input from the console

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🛠 Technical Details

• Data Storage: Text file (books.txt), managed by SaveBook class.
• Book Class:
  • Represents a book with title, author, isbn, releaseYear, and status (boolean).
  • Two constructors for new book creation and loading from file.
  • toText() and fromText() methods for file format conversion.
• SaveBook Class:
  • Handles saving and loading book lists to/from the file.
  • Uses BufferedReader/BufferedWriter for efficient file operations.
• Status: true means Available, false means Checked Out.

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📝 How to Use

1. Run the program.
2. On startup, SaveBook.loadBooks("books.txt") loads existing books into a list.
3. Use menu options to manage books (add, list, search, checkout, return).
4. On exit, SaveBook.saveBooks(books, "books.txt") saves changes to disk.

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🎯 Future Enhancements

• Input validation and exception handling improvements.
• More search and filter options.
• GUI version for better usability.

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📂 File Structure

📁 project-root

─ Book.java

─ Main.java

─ SaveBook.java

─ books.txt ← Persistent data file