public class HashedMap<K,V> extends AbstractHashedMap<K ,V> 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. This class may throw exceptions when accessed by concurrent threads without synchronization.
AbstractHashedMap.EntrySet <K,V>, AbstractHashedMap.EntrySetIterator <K,V>, AbstractHashedMap.HashEntry <K,V>, AbstractHashedMap.HashIterator <K,V>, AbstractHashedMap.HashMapIterator <K,V>, AbstractHashedMap.KeySet <K>, AbstractHashedMap.KeySetIterator <K>, AbstractHashedMap.Values <V>, AbstractHashedMap.ValuesIterator <V> AbstractMap.SimpleEntry <K,V>, AbstractMap.SimpleImmutableEntry <K,V> DEFAULT_CAPACITY, DEFAULT_LOAD_FACTOR, DEFAULT_THRESHOLD, GETKEY_INVALID, GETVALUE_INVALID, MAXIMUM_CAPACITY, NO_NEXT_ENTRY, NO_PREVIOUS_ENTRY, NULL, REMOVE_INVALID, SETVALUE_INVALID| 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
Constructor copying elements from another map.
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| Modifier and Type | Method and Description |
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HashedMap |
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, valuesfinalize, getClass, notify, notifyAll, wait, wait, waitcompute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAllpublic HashedMap()
public HashedMap(int initialCapacity)
initialCapacity - the initial capacity
IllegalArgumentException - if the initial capacity is negative
public HashedMap(int initialCapacity,
float loadFactor)
initialCapacity - the initial capacity
loadFactor - the load factor
IllegalArgumentException - if the initial capacity is negative
IllegalArgumentException - if the load factor is less than zero
public HashedMap(Map<? extends K ,? extends V> map)
map - the map to copy
NullPointerException - if the map is null