class Film extends InventoryItem implements Sortable
{
   public Film(int i, int rTemp) 
   {
       super("The Film class",i);
       recommendedTemp = rTemp;
       numberOfExposures = 24;
   } // constructor

   // methods speific to Film
   void print()
   {
       System.out.println( getDescription() + getId() + " : " + getQuantityOnHand());
       System.out.println( " recom. temp : " + recommendedTemp);
   } // print

   public int compare(Sortable b) // implements the interface
   {
      Film fm = (Film)b;   // cast b to Film
      return recommendedTemp - fm.recommendedTemp;
   } // compare

   private int recommendedTemp;
   private int numberOfExposures;
} // Film