Simple Calculator Java

A modern desktop calculator built in Java (Swing).
Supports basic and chained arithmetic, decimals, reciprocal, and clear error handling.

Demo Screenshot

Features

• Intuitive, color-coded modern UI
• Chained calculations: "1+2*3-4/5"
• Supports decimal numbers
• Immediate error messages for invalid input (e.g. division by zero)
• Reciprocal button (1/x) for quick calculations

How to Run

1. Download or clone this repo.
2. Compile: javac Calculator.java
3. Run: java Calculator