Case study

RestManager

Java desktop application for restaurant operations: menu, tables, orders, kitchen workflow, payments, and sales tracking.

Role

Java desktop development, persistence modeling, business workflow design, and layered architecture.

  • Java
  • JavaFX
  • Hibernate JPA
  • MySQL
  • MVC
  • DAO
  • Service Layer
  • Maven
  • IntelliJ IDEA
  • phpMyAdmin
RestManager cover screenshot

Context

Project overview

RestManager focuses on operational restaurant workflows where order status, table activity, payments, and sales tracking must remain consistent.

Problem

Restaurant operations need reliable coordination between menus, tables, orders, payment status, kitchen workflow, and daily sales history.

Objectives

  • Menu, table, order, payment, and sales workflows modeled as restaurant operations.
  • MVC, DAO, and service layers separate interface, persistence, and business rules.
  • Automatic total calculation and order status workflow support operational consistency.

Solution

What was built

Built a JavaFX desktop application with Hibernate/JPA persistence, MVC structure, DAO and service layers, and business rules for data consistency.

Why this approach

The layered Java architecture separates UI, services, DAO persistence, and business rules to keep the desktop application maintainable.

Architecture

A structured view of the technical blocks and responsibilities planned in the project.

Frontend

Frontend

JavaFX desktop interface for menu management, tables, order states, payments, and history views.

Backend

Backend

Service layer and DAO structure separating business rules from UI interactions.

Database

Database

MySQL persistence through Hibernate/JPA with restaurant entities and relationships.

Authentication

Authentication

Authentication is not positioned as the core focus; business workflow consistency is the main concern.

Integrations

Integrations

Maven project structure, IntelliJ IDEA development environment, phpMyAdmin, and README demo video.

Technical challenges

  • Maintaining order and payment consistency across table workflows.
  • Separating business rules from JavaFX interface code.
  • Designing persistence with Hibernate/JPA for restaurant entities.

Engineering decisions

Menu, table, order, payment, and sales workflows modeled as restaurant operations.

MVC, DAO, and service layers separate interface, persistence, and business rules.

Automatic total calculation and order status workflow support operational consistency.

Quality & testing

Quality is presented as a progressive engineering approach: targeted tests, readability, static analysis, and documented decisions.

Testing approach

The project highlights data consistency through business rules, automatic total calculation, and clear workflow separation.

Maintainability and analysis

  • Readable architecture and separated responsibilities

Results

  • Demo video is available in the repository README.
  • The project demonstrates layered Java desktop architecture with persistence.
  • No production deployment or commercial restaurant usage is claimed.

Lessons learned

These takeaways turn the project into evidence of technical reasoning, not just a feature list.

  • Turn "Restaurant operations need reliable coordination between menus, tables, orders, payment status, kitchen workflow, and daily sales history." into explicit technical decisions.
  • Present trade-offs clearly so an engineering team can review the reasoning.
  • Connect architecture, testing, and maintainability to a concrete problem.