CPIT252 - Perfume Store System

This repository contains a Java-based course project for CPIT252.
The main idea of the project is to simulate a simple perfume store system using multiple object-oriented design patterns to organize the code and separate responsibilities.

Project Overview

The system demonstrates how a perfume store can handle:

• product creation
• configuration management
• discount application
• payment processing
• simplified store operations through a facade layer

The project is implemented in Java and structured as a desktop/console-based application.

Design Patterns Used

1. Singleton Pattern

Used in ConfigManager to ensure that only one configuration manager object exists in the system.

Purpose:
Manage shared configuration values such as currency and region.

2. Factory Pattern

Used in perfumeFactory to create perfume objects based on the selected type.

Purpose:
Encapsulate object creation and avoid direct instantiation in the main program.

3. Decorator Pattern

Used through ProductDecorator and DiscountDecorator.

Purpose:
Add extra behavior to products dynamically, such as applying discounts without modifying the original perfume classes.

4. Strategy Pattern

Used through PaymentStrategy, PayPalPayment, CreditCardPayment, and PaymentContext.

Purpose:
Allow switching between different payment methods at runtime.

5. Facade Pattern

Used in StoreFacade.

Purpose:
Provide a simple unified interface for the main store operations such as creating products, applying discounts, accessing configuration, and processing payments.

Main Classes

Product-related classes

• perfume → abstract base class for all perfumes
• Channel → represents Chanel No. 5
• Dior → represents Dior Sauvage
• Marc → represents Marc Jacobs Daisy
• perfumeFactory → creates perfume objects

Discount-related classes

• ProductDecorator → abstract decorator for perfume objects
• DiscountDecorator → applies a discount to a perfume

Payment-related classes

• PaymentStrategy → interface for payment behavior
• PayPalPayment → PayPal payment implementation
• CreditCardPayment → credit card payment implementation
• PaymentContext → executes the selected payment strategy

Configuration and system classes

• ConfigManager → manages system configuration using Singleton
• StoreFacade → provides simplified access to core store features
• Project252 → main entry point of the application

Features

• Create different perfume products
• Display product name, price, and description
• Apply discount to selected products
• Choose between multiple payment methods
• Read configuration values such as currency and region
• Demonstrate multiple design patterns in one practical project

Project Structure

CPIT252/
│
├── project252/
│   ├── src/project252/
│   │   ├── perfume.java
│   │   ├── Channel.java
│   │   ├── Dior.java
│   │   ├── Marc.java
│   │   ├── perfumeFactory.java
│   │   ├── ProductDecorator.java
│   │   ├── DiscountDecorator.java
│   │   ├── PaymentStrategy.java
│   │   ├── PayPalPayment.java
│   │   ├── CreditCardPayment.java
│   │   ├── PaymentContext.java
│   │   ├── ConfigManager.java
│   │   ├── StoreFacade.java
│   │   └── Project252.java
│
└── Project_CPIT_252/
    └── src/project_cpit_252/

How to Run

1. Clone the repository:

git clone https://github.com/Reemajez/CPIT252.git

2. Open the project in NetBeans or any Java IDE.

3. Navigate to the main source folder:

project252/src/project252/

4. Run the main class:

Project252.java

Example Workflow

When the program runs, it can:

1. load configuration settings
2. create a perfume product
3. apply a discount to the product
4. ask the user to choose a payment method
5. process the payment and display the result

Educational Purpose

This project was developed for the CPIT252 course to practice:

• object-oriented programming
• clean class design
• software design patterns
• separation of concerns
• practical Java development