org.apache.commons.collections4

Interface OrderedMapIterator<K,V>

Type Parameters:

K - the type of the keys in the map

V - the type of the values in the map

All Superinterfaces:

java.util.Iterator<K>, MapIterator<K,V>, OrderedIterator<K>

All Known Implementing Classes:

AbstractOrderedMapIteratorDecorator, EmptyOrderedMapIterator, UnmodifiableOrderedMapIterator

public interface OrderedMapIterator<K,V>
extends MapIterator<K,V>, OrderedIterator<K>

Defines an iterator that operates over an ordered Map.

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

Since:

3.0

Method Summary

Modifier and Type	Method and Description
boolean	hasPrevious() Checks to see if there is a previous entry that can be iterated to.
K	previous() Gets the previous key from the Map.

Methods inherited from interface org.apache.commons.collections4.MapIterator

getKey, getValue, hasNext, next, remove, setValue

Methods inherited from interface java.util.Iterator

forEachRemaining

Method Detail

hasPrevious

boolean hasPrevious()

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

Specified by:

hasPrevious in interface OrderedIterator<K>

Returns:

true if the iterator has a previous element

previous

K previous()

Gets the previous key from the Map.

Specified by:

previous in interface OrderedIterator<K>

Returns:

the previous key in the iteration

Throws:

java.util.NoSuchElementException - if the iteration is finished