Java Swing Desktop Applications

A collection of two Java desktop GUI projects built with Swing:

1. Hotel Booking System
2. Inventory Management System

The original archive did not contain a reliable course name, so this repository uses a descriptive portfolio title instead of guessing the course.

Projects

Hotel Booking System

A reservation-management application with separate employee and guest workflows.

Key features:

• reservation CRUD operations
• guest reservation lookup by ID
• check-out date updates
• remaining-time calculation
• validated dates and amounts
• persistent local storage

Inventory Management System

A desktop inventory manager with a searchable item table.

Key features:

• add, edit, and delete inventory items
• dynamic search over the real inventory list
• unique serial numbers
• quantity and price validation
• persistent local storage
• default sample inventory on first launch

Improvements over the Original Archive

The uploaded prototype compiled, but several behaviors were incomplete or fragile.

The GitHub-ready edition:

• fixes the Inventory Add Item action so items actually enter the inventory
• removes hard-coded search as the source of truth
• adds inventory update/delete functionality
• makes both applications persist their data
• replaces string-based hotel reservations with a typed Reservation model
• makes Guest View work with a selected reservation ID instead of always using the first reservation
• validates check-in/check-out dates, amounts, quantities, and required fields
• removes the uploaded personal sample reservation from the public repository
• separates domain/storage logic from Swing UI code
• adds automated model/storage tests
• adds GitHub Actions
• removes STATUS.txt, IDE metadata, generated .class files, and other non-source artifacts

Requirements

• Java 17 or newer

Check your Java version:

java -version
javac -version

Run the Applications

See each project README for individual commands:

• Hotel Booking System
• Inventory Management System

Run Automated Tests

On Linux/macOS/Git Bash:

bash scripts/test.sh

The test script compiles both applications with Java 17 and runs storage/domain regression tests.

Repository Structure

Java-Swing-Desktop-Applications/
├── hotel-booking-system/
│   ├── src/main/java/com/portfolio/hotel/
│   ├── src/test/java/com/portfolio/hotel/
│   └── README.md
├── inventory-management-system/
│   ├── src/main/java/com/portfolio/inventory/
│   ├── src/test/java/com/portfolio/inventory/
│   └── README.md
├── scripts/
│   └── test.sh
├── .github/workflows/
│   └── build.yml
├── .gitignore
├── .gitattributes
└── README.md

Concepts Demonstrated

• Java
• Swing GUI development
• object-oriented programming
• file persistence
• data validation
• collections
• table models
• local application state
• automated regression testing