Food Delivery Application
What this project solves.
A full-featured food ordering and delivery platform with menu browsing, cart management, secure payment gateway integration, real-time order tracking, and a complete admin management panel.
Local restaurants lacked a digital ordering channel, forcing customers to call in orders prone to miscommunication, while restaurant owners had no visibility into order volumes, popular items, or revenue trends.
A Java EE web application built with JSP and Servlets providing an end-to-end food ordering platform. Customers browse menus, manage carts, and pay online. Restaurant admins manage menus, track incoming orders, and view revenue analytics through a dedicated panel.
Enables restaurants to accept digital orders without third-party commissions, provides customers with a seamless online ordering experience, and gives restaurant owners data-driven insights into their business performance.
See it in action
Under the hood
Features
- Restaurant menu browsing with category filtering
- Shopping cart with item quantity management
- Secure payment gateway integration with order confirmation
- Real-time order status tracking (placed → preparing → out for delivery → delivered)
- Customer order history with reorder functionality
- Admin panel: menu management, order processing, delivery assignment
- Revenue and popular items analytics dashboard
- Session-based authentication with role separation (customer / admin)
Challenges
- Managing shopping cart state across multiple JSP pages without a modern frontend framework
- Implementing concurrent order processing without race conditions in the MySQL order table
- Building a responsive UI with pure Bootstrap while the backend is tightly coupled to JSP
- Handling payment gateway callbacks securely in a Servlet-based architecture
Solutions
- Used HTTP session objects to persist cart state server-side across the JSP page lifecycle
- Implemented database-level transactions with appropriate isolation levels for order insertion and inventory updates
- Separated presentation (JSP) from business logic (Servlet + Service classes) using MVC pattern principles
- Processed payment callbacks in a dedicated Servlet with request signature verification before updating order state
Lessons Learned
- Java EE MVC with JSP and Servlets teaches foundational web architecture that modern frameworks abstract away
- Server-side session management is powerful but requires careful lifecycle management to avoid memory issues
- Separating concerns even in a monolithic stack improves testability and maintainability significantly
- Payment integration requires a security-first mindset — callback verification is not optional
