Package org.apache.commons.collections4

Interface OrderedIterator<E>

Type Parameters:

E - the type of elements returned by this iterator

All Superinterfaces:

Iterator<E>

All Known Subinterfaces:

OrderedMapIterator<K,V>, ResettableListIterator<E>

All Known Implementing Classes:

AbstractOrderedMapIteratorDecorator, ArrayListIterator, CursorableLinkedList.Cursor, EmptyListIterator, EmptyOrderedIterator, EmptyOrderedMapIterator, ListIteratorWrapper, LoopingListIterator, ObjectArrayListIterator, ReverseListIterator, SingletonListIterator, UnmodifiableOrderedMapIterator

public interface OrderedIterator<E>
extends Iterator<E>

Defines an iterator that operates over an ordered container. Subset of ListIterator.

This iterator allows both forward and reverse iteration through the container.

Since:

3.0

Method Summary

Modifier and Type	Method	Description
boolean	hasPrevious()	Checks to see if there is a previous element that can be iterated to.
E	previous()	Gets the previous element from the container.

Methods inherited from interface java.util.Iterator

forEachRemaining, hasNext, next, remove

Method Details

hasPrevious

boolean hasPrevious()

Checks to see if there is a previous element that can be iterated to.

Returns:

true if the iterator has a previous element

previous

E previous()

Gets the previous element from the container.

Returns:

the previous element in the iteration

Throws:

NoSuchElementException - if the iteration is finished