/** Counts the number of times a given entry appears in a bag.
		 @param anEntry  The entry to be counted.
		 @return  the number of times anEntry appears in the bag. */
	public int getFrequencyOf(T anEntry) 
	{
      checkInitialization();
		int counter = 0;

		for (int index = 0; index < numberOfEntries; index++) 
		{
			if (anEntry.equals(bag[index]))
			{
				counter++;
			} // end if
		} // end for

		return counter;
	} // end getFrequencyOf