Vending Machine (Java Swing + SQLite)

Java Swing desktop app for a vending machine with admin and customer flows, backed by SQLite. Inventory updates after each order and order history is persisted.

Features

• Admin login (username/password)
• Customer quick start (name only)
• Manage inventory: add, edit, delete, activate/deactivate
• Browse items, add to cart, checkout
• Inventory decrements on purchase
• Order history view (admin)
• Cart editing: remove items, edit quantities, double-click to edit, live total

Tech Stack

• Java 8+
• Swing UI
• SQLite via sqlite-jdbc
• Maven build

Quick Start

1. Build
   • Windows PowerShell:
     • mvn -q -e -DskipTests package
2. Run
   • java -jar target/vendingmachine-1.0.0.jar

First run creates vendingmachine.db and seeds:

• Admin user: admin / admin
• Sample items: Chips, Soda, Candy

Project Structure

src/main/java/com/vendingmachine/
  App.java                 # Entry point
  db/Database.java         # SQLite connection + schema init
  model/Item.java          # Domain models
  model/Order.java
  model/OrderItem.java
  dao/ItemDao.java         # Data access
  dao/OrderDao.java
  ui/LoginFrame.java       # Swing screens
  ui/AdminFrame.java
  ui/CustomerFrame.java
  ui/AdminService.java
src/main/resources/schema.sql  # DB schema & seed
pom.xml

Notes

• Passwords are stored in plain text for demo; replace with hashing for production.
• If you prefer MySQL instead of SQLite, see below.

Switch to MySQL (optional)

1. Add dependency in pom.xml:

<dependency>
  <groupId>mysql</groupId>
  <artifactId>mysql-connector-java</artifactId>
  <version>8.0.33</version>
</dependency>

2. Update Database.java JDBC URL and credentials.
3. Run equivalent schema in MySQL (convert INTEGER PRIMARY KEY AUTOINCREMENT to INT AUTO_INCREMENT, DATETIME DEFAULT CURRENT_TIMESTAMP, etc.).

Development

• Java version is set to 1.8 for broad compatibility. Update in pom.xml if you have a newer JDK.
• Logs use slf4j-simple.

License

MIT

A simultion of a vending machine for all your needs