Car-Sale-System

Car Sale Management System

A Java Swing-based desktop application designed to manage the sale of cars efficiently. The system includes different user roles — Admin, Staff (Salesman), and User — each with their own functionalities. Data is stored using JSON, making it simple, file-based, and ideal for educational and learning purposes.

🧩 Features 👑 Admin

Add, update, and delete car listings

Manage all car details: brand, model, year, type, fuel, transmission, condition, color, status, and price

Manage registered staff and users

View all sales records and user histories

🧍 Staff / Salesman

View car listings added by admin

Manage assigned cars or bookings

Process user payments and confirm car sales

Update car status after sale completion

👤 User

Register and log in to the system

Browse available cars with details

Book or purchase cars

View personal purchase and booking history

💾 Data Management

Each user has a personal folder containing:

credentials.json → login data

info.json → user information

History.json → booking and payment history

All car and transaction data stored in JSON format

Data auto-updates when actions occur (e.g., booking, purchase, or car status change)

⚙️ Technologies Used

Java Swing – GUI framework

GSON Library – for JSON data handling

NetBeans 8.2 – IDE for development

🧭 How to Run

Download or clone this repository:

git clone https://github.com/yourusername/CarSaleSystem.git

Open the project in NetBeans 8.2 (or compatible version).

Make sure the GSON library is added to the project libraries.

Clean and build the project.

Run the main class to start the system.

📁 Project Structure CarSaleSystem/ │ ├── src/ # All Java source code │ ├── admin/ # Admin module │ ├── staff/ # Staff/Salesman module │ └── user/ # User module │ ├── nbproject/ # NetBeans project settings ├── Users/ # Contains user folders and JSON files ├── Cars.json # Central car data ├── .gitignore ├── build.xml └── LICENSE

🪪 License

This project is licensed under the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license.

You may:

Use, share, and modify this project for educational or personal purposes

Not use it for commercial purposes or resale

📄 Read the full license here

Author © 2025 Rubayed Hossain Ruddra All rights reserved.