/**************************************************
*   Author: Morrison
*   Date:  12 Apr 202021
**************************************************/

import javafx.application.Application;
import javafx.application.Platform;
import javafx.stage.Stage;
import javafx.scene.Scene;

public class RPN extends Application
{
    private final TextArea display;
    private NumberButton[] digits;
    private NumberButton decimalPoint;
    private NumberButton exponent;
    public RPN()
    {
        display = new TextArea();
        display.setText(0,0);
        digits = new NumberButton[10];
        for(int k = 0; k < 10; k++)
        {
            digits[k] = new NumberButton("" + ( (char) 0x30 + k));
        }
        decimalPoint = new NumberButton('.');
    }
    
    @Override
    public void init()
    {
    }

    @Override
    public void start(Stage primary)
    {
        
        primary.show();
    }

    @Override
    public void stop()
    {
    }
  
    /********************** Inner Classes ********************/
    class NumberButton extends Button
    {
        private final char num;
        public Button(char num)
        {
            super("" + num);
            this.num = num;
        }

    }
    class OpButton extends Button
    {
    }
    class FunctionButton extends Button
    {
    }
}