Food Ordering System

A simple desktop Point-of-Sale (POS) application for a fast-food style menu, built in Java Swing as a BlueJ project. It supports admin login, placing/listing orders, processing cash payments with change calculation, and viewing a sales report — all through a series of dialog-based panels.

Features

• Password-protected login — a fixed admin password gates access to the system (3 attempts allowed before the app exits).
• Fixed menu — 15 hardcoded menu items (burgers, fries, sundaes, and drinks) with preset prices.
• Order Meal — pick an item by its Meal ID and quantity to add it to the current order.
• List Orders — view all items in the current order, the running total, and remove an order by its ID.
• Process Payment — enter cash received; change is calculated automatically. Confirming the payment records a sales entry and clears the current order.
• Sales Report — view a table of all completed transactions (amount, cash given, change) with a running total.
• Exit — cleanly closes the program from the main menu.

Tech Stack

• Language: Java (Swing / AWT for the GUI)
• IDE / Project format: BlueJ (package.bluej)
• UI: JOptionPane dialogs hosting custom JPanel forms, Nimbus look-and-feel (falls back to default if unavailable)

Project Structure

Test/
├── OrderingSystem.java      # Main class — login loop, menu loop, and all business logic
├── Meal.java                 # Meal, Password, Order, and SalesReport data classes
├── MenuPanel.java             # Main menu dropdown (Order Meal / List Orders / Process Payment / Sales Report / Exit)
├── OrderMealPanel.java        # Panel for browsing the menu and placing an order
├── OrdersList.java             # Panel listing current orders and removing an order by ID
├── ProcessPaymentPanel.java    # Panel for entering cash and viewing calculated change
├── SalesReportPanel.java       # Panel displaying completed sales transactions
├── PasswordPanel.java          # Login dialog panel
├── package.bluej                # BlueJ project metadata
└── README.TXT                   # Original blank BlueJ template README

Note: Password, Order, and SalesReport are all defined inside Meal.java alongside the Meal class rather than in their own files.

Getting Started

Prerequisites

• Java JDK 8 or later
• (Optional) BlueJ IDE, since this project includes BlueJ project files

Run with BlueJ

1. Open BlueJ.
2. Project → Open... and select the Test folder (contains package.bluej).
3. Right-click the OrderingSystem class and choose void main(String[] args).

Run from the command line

cd Test
javac *.java
java OrderingSystem

Usage

1. Login — enter the admin password when prompted.
   • Default password: admin
   • You have 3 attempts; the program exits after 3 failed tries.
2. Main Menu — choose one of:
   • Order Meal — enter a Meal ID (shown in the menu table) and quantity, then confirm to add it to the order.
   • List Orders — review current orders and the total amount; enter an Order ID and click the button to remove that order.
   • Process Payment — enter the cash received; the change is calculated automatically. Confirm to save the transaction and clear the order.
   • Sales Report — view all completed transactions and the total revenue.
   • Exit Program — closes the application.