Store Catalog and Customer Management System

This project is a Java-based desktop application designed for efficient management of a store's catalog, customer database, and transactions. It features a robust graphical user interface (GUI) alongside a text-based console mode for flexible usage scenarios.

The application focuses on creating a seamless user experience for both the store staff and customers by providing an intuitive platform for managing products, customers, and sales.

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Features

1. Product Management

• Catalog Display: Displays a comprehensive list of products, including images, descriptions, and prices.
• Cart Operations:
  • Add items to the cart with the desired quantity.
  • Remove specific items or clear the entire cart.
• Bulk Purchase Discounts: Automatically applies a 10% discount for orders of 10 or more units of the same product.
• Sales Tax Calculation: Includes a 6% tax calculation applied to the subtotal at checkout.

2. Customer Management

• Customer Lookup: Quickly load existing customer details by providing a unique customer ID.
• New Customer Creation: Add new customers directly into the system.
• Transaction Records:
  • Track the date and amount of the last transaction for each customer.
  • Maintain a history of total purchase value for every customer.
• Persistent Data Storage: Reads customer data from customers.txt at startup and saves updates to the same file.

3. Invoice and Payment Handling

• Payment Options:
  • Full payment: Offers a 5% discount for upfront payment.
  • Installment payment: Allows flexible partial payments.
• Invoice Generation:
  • Generates detailed invoices summarizing purchases, discounts, tax, and payment details.
  • Saves invoices to invoice.txt for record-keeping.

4. Console Mode

• A text-based interface replicating all features available in the GUI:
  • Customer and product management.
  • Cart operations.
  • Payment handling and invoice generation.

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Technologies Used

• Java Swing: For building the graphical user interface.
• Java File I/O: For reading and writing data to and from files.
• Object-Oriented Programming (OOP): To model products, customers, and transactions effectively.
• Error Handling: Robust handling of edge cases like invalid inputs and empty cart scenarios.

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How It Works

1. File Integration

• products.txt:
  • Contains the product catalog with fields for product code, name, description, price, and icon image path.
  • Updates dynamically as products are added or removed.
• customers.txt:
  • Stores customer details such as ID, name, total purchases, and last transaction date.
  • Supports creating and updating customer records.
• invoice.txt:
  • Outputs a detailed invoice for each transaction, ensuring records of all sales are kept.

2. GUI Mode

• Main Window:
  • Displays the product catalog with product images, descriptions, and prices.
  • Allows users to add/remove items from the cart.
• Cart Panel:
  • Shows items added to the cart with quantities, prices, and total cost.
  • Handles discounts for bulk orders and applies sales tax.
• Customer Panel:
  • Supports loading or adding customer details for personalized service.
• Payment Panel:
  • Offers full payment or installment options.
  • Generates invoices and saves them for future reference.

3. Console Mode

• Mirrors the GUI functionality via a command-line interface.
• Provides step-by-step prompts to manage customers, products, and transactions.
• Offers a simpler yet efficient alternative for text-based environments.

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How to Build and Run

1. Compile the Program:

   javac Assignment4GUI.java

2. Run the Program:

   • GUI Mode:

     java Assignment4GUI

   • Console Mode:

     java Assignment4GUI console

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Project Structure

• Assignment4GUI.java: Main program containing GUI implementation and logic for managing the catalog, customers, and transactions.
• products.txt: Stores product information, including name, price, description, and associated icons.
• customers.txt: Maintains customer records, including IDs, names, and purchase history.
• invoice.txt: Saves detailed invoices for each completed transaction.

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Usage Scenarios

Store Staff

• Use the GUI to quickly process customer transactions.
• Keep track of inventory and customer records seamlessly.

Customers

• Enjoy faster checkouts with personalized service.
• Receive detailed invoices for each purchase.

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Future Enhancements

• Search Functionality: Add a search bar to filter products by name or category.
• Advanced Analytics: Generate sales reports and customer insights.
• Database Integration: Transition from file-based storage to a database for enhanced scalability.

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License

This project is intended for educational purposes and is not licensed for commercial use.

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