// Fig. 15.10: FactorialCalculator.java
// Iterative factorial method.

public class FactorialCalculator
{
   // recursive declaration of method factorial   
   public long factorial( long number )
   {
      long result = 1;

      // iterative declaration of method factorial
      for ( long i = number; i >= 1; i-- )
         result *= i;

      return result;
   } // end method factorial

   // output factorials for values 0-10
   public void displayFactorials()
   {
      // calculate the factorials of 0 through 10
      for ( int counter = 0; counter <= 10; counter++ )
         System.out.printf( "%d! = %d\n", counter, factorial( counter ) );
   } // end method displayFactorials
} // end class FactorialCalculator

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