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:
    Iterator<K>, MapIterator<K,V>, OrderedIterator<K>
  All Known Implementing Classes:
    AbstractLinkedMap.LinkMapIterator, AbstractOrderedMapIteratorDecorator, AbstractSortedMapDecorator.SortedMapIterator, DualTreeBidiMap.BidiOrderedMapIterator, 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
  Version:
    $Id: OrderedMapIterator.java 1469004 2013-04-17 17:37:03Z tn $

- - ### Method Summary

    Methods
    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`

- - ### 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:
        `NoSuchElementException` - if the iteration is finished

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