/** Creates an empty bag having a given capacity.
       @param desiredCapacity  The integer capacity desired. */
   public ArrayBag(int desiredCapacity)
   {
   if (desiredCapacity <= MAX_CAPACITY)
   {
      // The cast is safe because the new array contains null entries
      @SuppressWarnings("unchecked")
      T[] tempBag = (T[])new Object[capacity]; // Unchecked cast
      bag = tempBag;
      numberOfEntries = 0;
      initialized = true;
      }
      else
         throw new IllegalStateException("Attempt to create a bag " +
                                         "whose capacity exceeds " +
                                         "allowed maximum.");
   } // end constructor