iterator

[TopNFalvors]

I have what is probably a silly question.

What is an iterator and how does it work in a doubly-linked list?

Is it is like a while loop like looping through an array?

Thanks!

[Junky]

An Iterator is simply a way to access each item is a collection one at a time and in order. It itself is not a loop but you use it in conjuction with a loop, either in the for each loop or while loop (while iterator has another item).

[doWhile]

3 links which hopefully help:
Iterator (Java Platform SE 6)
The Collection Interface (The Java™ Tutorials > Collections > Interfaces)
Iterator Design Pattern

[TopNFalvors]

Oh ok, I see, I found this example...

 private static void useWhileLoop( Collection<String> aFlavours ) {
    Iterator<String> flavoursIter = aFlavours.iterator();
    while ( flavoursIter.hasNext() ){
      System.out.println( flavoursIter.next() );
    }
  }

Thanks!