There are benefits and drawbacks to Java's Iterator vs. ListIterator interface. Learn how to make the right choice when you choose between them.

Anyway- its an implementation of a Trie following these interfaces.. It seems to work okay, but I'm not sure how to go about coding the iterator..

Developers can choose between fail-fast and fail-safe iterators in Java. Here we compare and contrast the two so you'll know which will fit your situation.