About this project
A change calculator that determines the optimal breakdown of change into bills and coins given a purchase amount and payment. The system calculates the difference and returns the most efficient denomination split.
The project includes both a console version for quick command-line use and a JOptionPane GUI version that presents the denomination breakdown in a graphical dialog.
This project demonstrates practical arithmetic operations, modular division for denomination calculation, and the kind of real-world math that underpins point-of-sale systems.
Key Features
- Denomination breakdown
- Optimal change calculation
- Console and GUI versions
- Bills and coins handling
- Input validation