Class ArrayListValuedHashMap<K,V>
java.lang.Object
org.apache.commons.collections4.multimap.AbstractMultiValuedMap<K,V>
org.apache.commons.collections4.multimap.AbstractListValuedMap<K,V>
org.apache.commons.collections4.multimap.ArrayListValuedHashMap<K,V>
- Type Parameters:
K- the type of the keys in this mapV- the type of the values in this map
- All Implemented Interfaces:
Serializable,ListValuedMap<K,,V> MultiValuedMap<K,V>
Implements a
ListValuedMap, using a HashMap to provide data
storage and ArrayLists as value collections. This is the standard
implementation of a ListValuedMap.
Note that ArrayListValuedHashMap is not synchronized and is not thread-safe. If you wish to use this map from multiple threads concurrently, you must use appropriate synchronization. This class may throw exceptions when accessed by concurrent threads without synchronization.
- Since:
- 4.1
- See Also:
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Constructor Summary
ConstructorsConstructorDescriptionCreates an empty ArrayListValuedHashMap with the default initial map capacity (16) and the default initial list capacity (3).ArrayListValuedHashMap(int initialListCapacity) Creates an empty ArrayListValuedHashMap with the default initial map capacity (16) and the specified initial list capacity.ArrayListValuedHashMap(int initialMapCapacity, int initialListCapacity) Creates an empty ArrayListValuedHashMap with the specified initial map and list capacities.ArrayListValuedHashMap(Map<? extends K, ? extends V> map) Creates an ArrayListValuedHashMap copying all the mappings of the given map.ArrayListValuedHashMap(MultiValuedMap<? extends K, ? extends V> map) Creates an ArrayListValuedHashMap copying all the mappings of the given map. -
Method Summary
Modifier and TypeMethodDescriptionCreates a new value collection using the provided factory.voidTrims the capacity of all value collections to their current size.Methods inherited from class org.apache.commons.collections4.multimap.AbstractListValuedMap
get, getMap, removeMethods inherited from class org.apache.commons.collections4.multimap.AbstractMultiValuedMap
asMap, clear, containsKey, containsMapping, containsValue, doReadObject, doWriteObject, entries, equals, hashCode, isEmpty, keys, keySet, mapIterator, put, putAll, putAll, putAll, removeMapping, setMap, size, toString, valuesMethods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, waitMethods inherited from interface org.apache.commons.collections4.MultiValuedMap
asMap, clear, containsKey, containsMapping, containsValue, entries, isEmpty, keys, keySet, mapIterator, put, putAll, putAll, putAll, removeMapping, size, values
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Constructor Details
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ArrayListValuedHashMap
public ArrayListValuedHashMap()Creates an empty ArrayListValuedHashMap with the default initial map capacity (16) and the default initial list capacity (3). -
ArrayListValuedHashMap
Creates an empty ArrayListValuedHashMap with the default initial map capacity (16) and the specified initial list capacity.- Parameters:
initialListCapacity- the initial capacity used for value collections
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ArrayListValuedHashMap
Creates an empty ArrayListValuedHashMap with the specified initial map and list capacities.- Parameters:
initialMapCapacity- the initial hashmap capacityinitialListCapacity- the initial capacity used for value collections
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ArrayListValuedHashMap
Creates an ArrayListValuedHashMap copying all the mappings of the given map.- Parameters:
map- aMapto copy into this map
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ArrayListValuedHashMap
Creates an ArrayListValuedHashMap copying all the mappings of the given map.- Parameters:
map- aMultiValuedMapto copy into this map
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Method Details
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createCollection
Description copied from class:AbstractListValuedMapCreates a new value collection using the provided factory.- Specified by:
createCollectionin classAbstractListValuedMap<K,V> - Returns:
- a new list
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trimToSize
Trims the capacity of all value collections to their current size.
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