Library Management Application

Overview

The Library Management Application is a Java-based system designed to efficiently manage books, users, and library administration. The application follows Object-Oriented Programming (OOP) principles to provide a modular and maintainable structure. It includes features such as book check-out, return, viewing, and advanced operations for administrators.

Folder Structure

The project follows a clean and organized folder structure:

• src/main/java/com/library/model: Contains classes representing the core model of the application.
• src/main/java/com/library/service: Contains services for library and stock management.
• src/main/java/com/library/ui: Contains the interactive menu and application entry point.

Design Decisions

Object-Oriented Design

The application adopts OOP principles, including inheritance, encapsulation, and polymorphism, to model entities such as books, users, and administrators. This design promotes code reuse, modularity, and a clear representation of real-world entities.

Separation of Concerns

The code is organized into distinct packages for models, services, and the user interface. This separation of concerns enhances maintainability by isolating different aspects of the application.

OOP Implementation

Book and BookDatabase

• The Book class represents a book with attributes such as title, author, ISBN, and checked-out status.
• The BookDatabase class simulates a database-like system for storing books with additional functionality for book management.

User and Admin

• The User class represents a regular user with a username and password.
• The Admin class extends the User class and introduces additional methods for administrative functionalities.

LibraryService

• Manages advanced library operations, including book check-out, return, and user authentication.
• Utilizes the BookDatabase for efficient book management.

Menu

• Provides an interactive menu for users to perform various actions.
• Customized for regular users and administrators, displaying different options based on the user's role.

Features Implementation

Authentication

• Users need to authenticate before accessing certain actions, ensuring security and user-specific functionality.

BookDatabase

• Introduces a database-like system for storing books with a checked-out status.
• Supports functionalities such as adding, removing, and querying books.

LibraryService

• Manages the check-out and return of books, including user authentication.
• Provides functionalities for retrieving all books, checked-out books, and library statistics.

Interactive Menu

The interactive menu provides users with the following options:

1. Check Out a Book: Allows users to check out a book after authentication.
2. Return a Book: Enables users to return a previously checked-out book.
3. View All Books: Displays a list of all books in the library.
4. View Checked Out Books: Shows a list of currently checked-out books.
5. View Library Statistics: Provides statistics such as total books and available books.
6. Exit: Exits the application.

Additional options for administrators:

7. Add Book to Database: Adds a new book to the library database.
8. Remove Book from Database: Removes a book from the library database.

Choose the option by entering the corresponding number.

Feel free to expand upon and modify the code based on your specific requirements. This is a starting point for a feature-rich library management application.