Java Swing Calculator

A simple calculator application built in Java using Swing and IntelliJ IDEA.
This project demonstrates GUI development, event handling, and basic arithmetic logic.

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Overview

The calculator provides a graphical interface that allows users to perform common arithmetic operations using on-screen buttons. All input is handled through button clicks, and results are displayed in a non-editable text field.

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Features

• Number input (0–9)
• Decimal support
• Basic operations: addition, subtraction, multiplication, division
• Modulo (%) operation
• Positive/negative toggle
• Clear and delete functionality
• Chained calculations

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Technologies Used

• Java
• Swing (JFrame, JPanel, JButton, JTextField)
• ActionListener for event handling
• IntelliJ IDEA

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How It Works

• The application window is created using a JFrame
• Buttons are organized in a grid layout
• User interactions are handled through the ActionListener interface
• Arithmetic operations are performed using double values to support decimals

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How to Run

1. Open the project in IntelliJ IDEA
2. Run the Calculator class
3. Use the on-screen buttons to perform calculations

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Purpose

This project was created to practice:

• Java GUI development
• Event-driven programming
• Object-oriented design concepts
• Git/GitHub project workflow

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