Store Management System
Enterprise•Completed
Project Details
Overview
A desktop application developed in Java to manage retail store operations. The platform integrates user authentication with role-based dashboards, real-time inventory management, and automated PNG receipt generation.
The Problem
Developing a reliable offline desktop solution to synchronize complex retail workflows—ranging from multi-role authentication specifically for Admin/Staff to real-time stock reconciliation and visual bill generation—without the overhead of a database server.
Approach
- —Architecture: Implemented a strict MVC-layered pattern (UI, Service, Model) to separate concerns and ensure maintainability.
- —Persistence: Utilized Java Object Serialization (ObjectOutputStream) to persist data into .dat files (users, products, categories, history), bypassing the need for external databases.
- —Security: Built role-based access control (RBAC) where Admins manage the master inventory while Staff access the POS/Billing interface.
- —POS Logic: Developed a real-time billing engine that updates stock levels instantly on each transaction and logs audit trails.
- —Visual Output: Integrated Java AWT/Swing drawing capabilities to export finalized bills as PNG images stored in a localized /bills folder.
Technical Stack
| Layer | Technology |
|---|---|
| Language | Java SE 17+ |
| GUI Framework | Java Swing, AWT |
| Data Storage | Java Serialization (.dat files) |
| Architecture | MVC (Model-View-Controller) |
| Image Processing | Java 2D API (PNG Export) |
What I learned
- —Role-based access control with unique dashboards for Admin and Staff
- —Dynamic product search and cart management within a Swing interface
- —Automated inventory audit logging and stock history tracking
- —Robust error handling for file-based serialization persistence
- —Designing a scalable MVC structure for desktop applications
- —Generating and exporting visual documents (PNG) from UI components
