2.4 KiB
2.4 KiB
Library System with Design Patterns
This is a simple Java project demonstrating a library system that utilizes various design patterns including builder, singleton, decorator, and iterator.
Overview
The project consists of the following components:
- Book: Represents a book in the library.
- Magazine: Represents a magazine in the library.
- LibraryItem: An interface representing items in the library, implemented by both Book and Magazine classes.
- Library: Implements the singleton pattern and represents the library. It manages the collection of items (books and magazines) and supports adding items with a capacity constraint. It also implements the iterator pattern to provide a way to iterate over its items.
- LibraryBuilder: Implements the builder pattern to construct the library by adding books and magazines.
- LibraryDecorator: An abstract class for extending functionality of the Library.
- IncreaseBooksCapacityDecorator: A concrete decorator to increase the books capacity of the Library.
- DecreaseBooksCapacityDecorator: A concrete decorator to decrease the books capacity of the Library.
- Test: Contains the main method to demonstrate the library system.
Design Patterns Used
- Builder Pattern: Used in the LibraryBuilder class to construct the library by adding books and magazines.
- Singleton Pattern: Implemented in the Library class to ensure only one instance of the library exists throughout the application.
- Decorator Pattern: Implemented with LibraryDecorator and its concrete decorators (IncreaseBooksCapacityDecorator and DecreaseBooksCapacityDecorator) to extend the functionality of the Library dynamically.
- Iterator Pattern: Implemented in the Library class to provide a way to iterate over its collection of items.
Prerequisites
Before you begin, ensure you have met the following requirements:
- Maven version 3 or higher
- Java version 11 or higher
Usage
To run the project:
- Clone or download the repository to your local machine.
- Open the project in your preferred Java IDE.
- Run the Test class.
The Test class demonstrates the following functionalities:
- Creation of books and magazines.
- Adding items to the library.
- Displaying items in the library.
- Modifying the books capacity using decorators.
- Iterating over the library items using the Iterator pattern.
Contributors
- Lucas Catolino
- Santiago Lo Coco
- Joel Kudiyirickal