Package org.apache.commons.collections4.bidimap

Class DualLinkedHashBidiMap<K,V>

java.lang.Object

org.apache.commons.collections4.bidimap.AbstractDualBidiMap<K,V>

org.apache.commons.collections4.bidimap.DualLinkedHashBidiMap<K,V>

Type Parameters:

K - the type of the keys in the map

V - the type of the values in the map

All Implemented Interfaces:

Serializable, Map<K,V>, BidiMap<K,V>, Get<K,V>, IterableGet<K,V>, IterableMap<K,V>, Put<K,V>

public class DualLinkedHashBidiMap<K,V>
extends AbstractDualBidiMap<K,V>
implements Serializable

Implementation of BidiMap that uses two LinkedHashMap instances.

Two LinkedHashMap instances are used in this class. This provides fast lookups at the expense of storing two sets of map entries and two linked lists.

Since:

4.0

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K,V>

Constructor Summary

Constructors

Constructor	Description
DualLinkedHashBidiMap()	Creates an empty HashBidiMap.
DualLinkedHashBidiMap(Map<? extends K,? extends V> map)	Constructs a LinkedHashBidiMap and copies the mappings from specified Map.

Method Summary

Methods inherited from class org.apache.commons.collections4.bidimap.AbstractDualBidiMap

clear, containsKey, containsValue, entrySet, equals, get, getKey, hashCode, inverseBidiMap, isEmpty, keySet, mapIterator, put, putAll, remove, removeValue, size, toString, values

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAll

Constructor Details

DualLinkedHashBidiMap

public DualLinkedHashBidiMap()

Creates an empty HashBidiMap.

DualLinkedHashBidiMap

public DualLinkedHashBidiMap(Map<? extends K,? extends V> map)

Constructs a LinkedHashBidiMap and copies the mappings from specified Map.

Parameters:

map - the map whose mappings are to be placed in this map