Package 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

- ## Method Summary

  Modifier and Type
  Method
  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 java.util.Iterator

  `forEachRemaining`

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

  `getKey, getValue, hasNext, next, remove, setValue`

- ## Method Details

  - ### 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