Simple GUI Calculator using Java Swing and Shunting yard algorithm. This Calculator also supports Big Decimal numbers as well.
| Class | Responsibilty |
|---|---|
| Main | Opens calculator window |
| CalculatorGUI | Painting the window, Balancing math expression format |
| ActionHandler | Controls user actions |
| CalculationEngine | Checks validation and calculates the expression |
Keyboard buttons recognized by program :
- Digits (1, 2, ...)
- Operators (+ - * / =)
- Dot
- Backspace
- Enter
 |
|---|
| GUI Structure |
- Supporting sin, cos and sqrt operations