//ButtontoRoman.class Java Applet
//Prepared by ... at ... on ....
import java.awt.*;
import java.applet.*;
public class ButtontoRoman extends Applet
{
private int dig;
private int Total; 
private int Arabic; 
private String Roman; 

public void start()
	{
		Arabic=0;
		digit_in(dig);
	}
public void digit_in(int digit_clicked)
	{
		dig=digit_clicked;
		Arabic=Arabic*10+dig;
		Total=Arabic;
        Roman="";
		Arabic_to_Roman();
		repaint();
	}
public void Arabic_to_Roman()
{
String[] T_Roman = {"M", "CM", "D", "CD", "C", "XC", "L", "XL", "X", "IX", "V", "IV", "I"};
int[] T_Arabic= {1000, 900, 500, 400, 100, 90, 50, 40, 10, 9, 5, 4, 1};
//All alert objects used here are optional and for purpose of testing only
//This part contains the algorithm of converting Arabic numbers into Roman:
int i;
i=0;
int count = 13;
while (i < count)
  {
  //alert ("Counter is  " + i)
  if (Total >= T_Arabic[i])
     {
        //This part converts Arabic into Roman
        Total = Total - T_Arabic[i];
        Roman=Roman+T_Roman[i];
        //alert ("Roman = " + Roman + ", Reaminder = " + Total);
        //i=i-1;
     }
  else
     {
        i=i+1;
     }
  }
}
public void paint(Graphics g)
	{
		setBackground(new Color(0x0000FF));
		g.setFont(new Font("TimesRoman",Font.BOLD+Font.ITALIC,48));
		g.setColor(Color.red);
		g.drawString("Digit just pressed = "+dig,40,80);
		g.drawString("Arabic number = "+Arabic,40,140);
		g.drawString("Roman = "+Roman,40,200);
	}
}