Idiomatic way to use for-each loop given an iterator?

Question

When the enhanced for loop (foreach loop) was added to Java, it was made to work with a target of either an array or Iterable.

for ( T item : /*         


        

Answer 1

The idiomatic way in Java 8 (being a verbose language) is this:

for (T t : (Iterable) () -> myDeque.descendingIterator()) {
  // use item
}

I.e. wrap the Iterator in an Iterable lambda. This is pretty much what you did yourself using an anonymous class, but it's a bit nicer with the lambda.

Of course, you could always just resort to using Iterator.forEachRemaining():

myDeque.descendingIterator().forEachRemaining(t -> {
  // use item
});