/* 
Purpose:
            This program computes the factorial(faculteit) of a given value
            
    Record of revision:
           Date                   Programmer:              Description
           ====                   ===========              ===========
           18-04-07               M.Helmijr                Original code
 
*/
 
import javax.swing.*;
public class Faculteit {
 
       //define method
       public static void main(String [] args)throws Exception  {
                                                                        
 
      //Declares variables
      int k;                                                    //integer van een getal
      int facul;                                               //kwadraat van het getal
      int value;                                               //input value
      String str;
 
      //Promt user for an value
      str = JOptionPane.showInputDialog ( null,
          "Enter a value to calculate the factorial");
      value = Integer.parseInt(str);
      
      //For Loop to calculate the factorial
      facul = 1;
      for(int x=value; x >= 1; x--)  {
 
            if (value <= 1)
               value = 1;
               
            facul *= x;
      }
               
      //show result
      JOptionPane.showMessageDialog( null, ""+facul);
      
      //Stop program
      System.exit(0);
                     
 
      }
}