☕ Coffee Shop Bill Management System

A professional desktop-based billing application built using Java Swing. This system automates the ordering process for a coffee shop, allowing for quick item selection, automated tax calculation, and clean bill generation.

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🚀 Features

• Smart Selection: * Drinks: Uses Radio Buttons for exclusive selection (Coffee, Tea, Milkshakes, etc.).
  • Food: Uses Checkboxes for multiple item selection (Pizza, Burger, Pasta, etc.).
• Automatic Calculations: * Instantly calculates Sub-total.
  • Calculates 15% VAT/Tax automatically.
  • Generates the Final Total Bill.
• Precision Formatting: All currency values are displayed with two decimal places (e.g., 150.00) using DecimalFormat.
• User Controls: * Enter: Process the bill.
  • Clear: Reset all fields and selections.
  • Exit: Close the application safely.

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🛠️ Tech Stack

• Language: Java
• GUI Library: Java Swing & AWT
• IDE: NetBeans (Designed with GUI Form Builder)

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📋 Menu & Pricing

Category	Item	Price (Taka)
Drinks	Coffee	50
	Tea	30
	Milk Shake	100
	Chocolate Shake	110
	Water	20
Food	Pizza	150
	Burger	80
	Pasta	130
	Noodles	90
	Set Menu	220

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⚙️ Installation & Usage

1. Clone the Repository:

   git clone [https://github.com/sajjadjim/Coffee-Shop-Bill-System.git](https://github.com/sajjadjim/Coffee-Shop-Bill-System.git)

2. Open in IDE: Open the project folder in NetBeans, IntelliJ, or Eclipse.
3. Run Application: Run the ShopBill.java file.
4. How to use:
   • Select one drink and any number of food items.
   • Click Enter to see the subtotal, tax, and total.
   • Click Clear to start a new order.

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💻 Logic Overview

The core calculation logic handles both the item price summation and the tax percentage:

double subtotal = 0;
final double TAXRATE = 0.15; // 15% Tax

// Example Drink Selection
if (redCoffee.isSelected()) {
    subtotal += 50;
}

// Total Calculation
double tax = subtotal * TAXRATE;
double total = subtotal + tax;

👤 Author Sajjad Hossain Jim

GitHub: @sajjadjim

Location: Dhaka, Bangladesh

Generated for the Coffee Shop Management Project.