Java POS System Documentation

Table of Contents

1. Introduction
2. Project Overview
3. Installation
4. Usage
5. Code Structure
6. Improvements
7. Conclusion

1. Introduction

This documentation provides an overview of a simple Java Point of Sale (POS) system created using Apache NetBeans. The system is designed for handling transactions in a retail or restaurant setting. It allows users to add items to a shopping cart, calculate the total, and generate a bill. This documentation covers the functionality, installation, and usage of the POS system.

2. Project Overview

2.1. Features

The Java POS system (Version 1.0.0) offers the following features:

• Add items to the shopping cart with quantity and price.
• Calculate the total cost of items in the cart.
• Display a bill with item details, subtotal, payment, and balance.
• Remove items from the cart.
• Simple user interface for easy interaction.

2.2. Technologies Used

The project was developed using the following technologies:

• Java Swing for the graphical user interface.
• Apache NetBeans IDE for development.

3. Installation

To run this Java POS system on your machine, follow these steps:

1. Ensure you have the Java Development Kit (JDK) installed on your system.

2. Download and install Apache NetBeans or any Java IDE of your choice.

3. Create a new Java project in your IDE and copy the provided code into the project.

4. Build and run the project.

4. Usage

4.1. Adding Items

• To add items to the shopping cart, click the respective buttons (e.g., "Quarter/2Pc (HC)").

• The quantity of the selected item can be increased by clicking the "Add" button multiple times.

4.2. Removing Items

• To remove an item from the shopping cart, select the item in the table and click the "Remove" button.

4.3. Making a Payment

• Enter the amount paid by the customer in the "Cash" field.

• Click the "Calculate Balance" button to calculate the balance to be returned to the customer.

4.4. Generating a Bill

• Click the "Generate Bill" button to create a bill with item details, subtotal, payment, and balance.

• The bill is displayed in the text area at the bottom of the window.

5. Code Structure

The code is organized as follows:

• The MainFrame class represents the main application window and contains event handlers for buttons and table interactions.

• The addTable method is used to add items to the shopping cart table.

• The tot method calculates the total cost of items in the cart.

• The paymentActionPerformed method handles the payment button click event.

• The jButton7ActionPerformed method generates the bill.

• The jButton8ActionPerformed method calculates the balance.

• Buttons from jButton1 to jButton6 handle the addition of specific items to the cart.

• The jButton9ActionPerformed method removes items from the cart.

6. Improvements

To enhance this POS system, consider implementing the following improvements:

1. Database Integration: Add a database to store product details, prices, and inventory levels.

2. User Authentication: Implement user authentication for secure access to the system.

3. Transaction History: Store transaction history for record-keeping and analytics.

4. GUI Enhancement: Improve the user interface by adding icons, better formatting, and a more appealing design.

5. Product Categories: Group products into categories for easier navigation.

6. Inventory Management: Implement inventory management features to update stock levels when sales are made.

7. Conclusion

This documentation has provided an overview of a simple Java POS system. While it is a basic implementation, it serves as a foundation for building more advanced and feature-rich POS systems. By following the installation and usage instructions, you can run the POS system and explore its functionality.