public class HashedMap extends AbstractHashedMap implements Serializable, Cloneable
Map implementation that is a general purpose alternative
to HashMap.
This implementation improves on the JDK1.4 HashMap by adding the
MapIterator
functionality and many methods for subclassing.
Note that HashedMap is not synchronized and is not thread-safe.
If you wish to use this map from multiple threads concurrently, you must use
appropriate synchronization. The simplest approach is to wrap this map
using Collections.synchronizedMap(Map). This class may throw
exceptions when accessed by concurrent threads without synchronization.
AbstractHashedMap.EntrySet, AbstractHashedMap.EntrySetIterator, AbstractHashedMap.HashEntry, AbstractHashedMap.HashIterator, AbstractHashedMap.HashMapIterator, AbstractHashedMap.KeySet, AbstractHashedMap.KeySetIterator, AbstractHashedMap.Values, AbstractHashedMap.ValuesIteratorAbstractMap.SimpleEntry, AbstractMap.SimpleImmutableEntrydata, DEFAULT_CAPACITY, DEFAULT_LOAD_FACTOR, DEFAULT_THRESHOLD, entrySet, GETKEY_INVALID, GETVALUE_INVALID, keySet, loadFactor, MAXIMUM_CAPACITY, modCount, NO_NEXT_ENTRY, NO_PREVIOUS_ENTRY, NULL, REMOVE_INVALID, SETVALUE_INVALID, size, threshold, values| Constructor and Description |
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HashedMap()
Constructs a new empty map with default size and load factor.
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HashedMap(int initialCapacity)
Constructs a new, empty map with the specified initial capacity.
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HashedMap(int initialCapacity,
float loadFactor)
Constructs a new, empty map with the specified initial capacity and
load factor.
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HashedMap(Map map)
Constructor copying elements from another map.
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| Modifier and Type | Method and Description |
|---|---|
Object |
clone()
Clones the map without cloning the keys or values.
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addEntry, addMapping, calculateNewCapacity, calculateThreshold, checkCapacity, clear, containsKey, containsValue, convertKey, createEntry, createEntrySetIterator, createKeySetIterator, createValuesIterator, destroyEntry, doReadObject, doWriteObject, ensureCapacity, entryHashCode, entryKey, entryNext, entrySet, entryValue, equals, get, getEntry, hash, hashCode, hashIndex, init, isEmpty, isEqualKey, isEqualValue, keySet, mapIterator, put, putAll, remove, removeEntry, removeMapping, reuseEntry, size, toString, updateEntry, valuespublic HashedMap()
public HashedMap(int initialCapacity)
initialCapacity - the initial capacityIllegalArgumentException - if the initial capacity is less than onepublic HashedMap(int initialCapacity,
float loadFactor)
initialCapacity - the initial capacityloadFactor - the load factorIllegalArgumentException - if the initial capacity is less than oneIllegalArgumentException - if the load factor is less than zeropublic HashedMap(Map map)
map - the map to copyNullPointerException - if the map is nullpublic Object clone()
clone in class AbstractHashedMapCopyright © 2001–2015 The Apache Software Foundation. All rights reserved.