`Factorial2' example program: demonstrates simple function calling

Factorial2.java

// Factorial1.java
// A program that works out the factorial of 50, that is, 50 * 49 * 48.... * 2 * 1.  
// This version implements an operation called `factorial' that can get the factorial
//  of any specified number
// Kevin Boone, June 1999

import java.applet.Applet;
import java.awt.*;

public class Factorial2 extends Applet
{
public void paint (Graphics g)
	{
	g.drawString ("Factorial of 50 is...", 20, 20);
	double result = factorial(50);
	g.drawString (Double.toString(result), 20, 40);
	}

// Here we define the `factorial' operation
public double factorial (int factorialRequired)
	{
	double result = 1; 
	
	for (int i = factorialRequired; i > 1; i++)
		{
		result = result * i;
		}
	return result;
	}

}