SimpleCalculator

A Java-based calculator application with a GUI that provides basic arithmetic operations and number base conversion capabilities.

Features

• Basic arithmetic operations (+, -, *, /)
• Number base conversion (between base 2 and base 10)
• Graphical user interface (GUI)
• Input validation
• Comprehensive logging system (file-based and Windows Event Viewer)

Technical Details

Requirements

• Windows operating system

• To enable Event Viewer logging, run this command in an Administrator PowerShell:

  New-EventLog -LogName Application -Source "SimpleCalculator"

  (This step is optional but recommended for full logging support.)

Key Features

• Input Validation: Ensures only valid characters and operations are processed.
• Base Conversion: Convert numbers between base 2 (binary) and base 10 (decimal).
• Expression Evaluation: Handles simple arithmetic expressions with proper operator precedence.
• Error Handling: Comprehensive error detection and user-friendly feedback.
• Logging: Detailed activity logging for debugging and monitoring, both locally and in the Windows Event Viewer.

Installation

• Go to the Releases page and download the .msi installer.
• Alternatively, you can build the project yourself from the source code.

Usage

1. Launch the application.
2. Use the calculator interface to:
   • Type arithmetic expressions.
   • Convert numbers between bases.
   • View results.
3. Press Enter to evaluate expressions.
4. Use dedicated buttons for base conversion (once a button is used, use the tab button accordingly to refocus on the label).
5. Press C to clear the input.
6. Press Backspace to delete the last character.

Logging

The application maintains logs in two locations:

• File logs:
  C:\Users\[username]\AppData\Local\SimpleCalculator\logs.txt
• Windows Event Viewer:
  Under the application name "SimpleCalculator" (Application log)

Version

Current version: 2.0

Notes

• The application requires Windows OS for full functionality due to Event Viewer integration.
• Maximum equation length: 500 characters.
• Supported characters: digits (0-9) and basic arithmetic operators (+, -, *, /).
• Floating-point numbers are not supported.
• Negative numbers are supported.
• Maximum value: fits within an int (up to 9 digits).

Source Code

You can view or contribute to the project here:
🔗 SimpleCalculator GitHub Repository