ListIterator implementation

Hi,
Anyone knows which class implements ListIterator interface. I ran through the api's but can't get any clue. If no class implements then how is it that we can use the previous() method ?

Thanks.

It is implemented by inner classes in the "List" collection types.

I.E.

Code:

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List<String> a = new ArrayList<String>();
ListIterator<String> li = (ListIterator<String>) a.iterator();

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Ok, I checked the source files then I got that it is implements in the inner class

Thanks for Reply.