Refer to the Java documentation on Iterator for more about this interface. For Train to successfully implement the Iterable interface (which the provided List interface ...

If the iterable is array-type, the iterator at Symbol.iterator is the same as values, whereas if the iterable is map-type, then the iterator at Symbol.iterator is the same as entries. Original issue I ...

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

Fail-safe vs. fail-fast Java iterators If the goal is to avoid exceptions, system resources are in plentiful supply, and updates to the underlying collection class while the iterator runs will not ...