🚀 go-pugleaf

Steve,
	Your code looks correct -- it would be faster if you used a
StringBuffer rather than a String, but it looks as though it works.

	You don't need to write hasMoreElements() or nextElement(). The
function Vector.elements() returns an implementation of the Enumeration
interface.

Tom


Steve Hewitt wrote:
> 
> Can anyone please help with the following...
> 
> I have been asked to write a class called 'ItemSet' which holds a number of
> Item objects (already defined).
> 
> The Items are stored within a vector and typical methods are 'addItem()',
> 'removeItem()', 'getItems()' etc, etc.
> 
> I have been told to use the Enumerator class but I am having a few problems.
> What exactly do I need to include within the ItemSet class to make use of
> the Enumerator class? I understand that it is used to iterate through
> elements of an object and that I must declare two methods - public boolean
> hasMoreElements() and public Object nextElement() - but how does it all fit
> together?
> 
> As an example I have a method which should return all Items that are
> contained within the set. I have coded this to be :
> 
> // returns a String of relevant set details
> public String toString()
> {
>     String setDetails = new String();
> 
>     for (Enumeration e = items.elements() ; e.hasMoreElements() ;)
>         setDetails = setDetails + e.nextElement() + '\n';
> 
>     return setDetails;
> }
> 
> where 'items' is the Vector containing all of the Items in the set. What should the methods hasMoreElements and nextElement contain? and is the implementation of the method above correct?
> 
> Any help would be much appreciated.
> 
> Steve
> steve@bert44.freeserve.co.uk
> hewitts@abs-ltd.com