| org.apache.commons.collections.map.AbstractHashedMap
 org.apache.commons.collections.map.HashedMap
| HashedMap | | public class HashedMap extends AbstractHashedMap implements Serializable,Cloneable(Code) | | A Map implementation that is a general purpose alternative
to HashMap.
This implementation improves on the JDK1.4 HashMap by adding the
org.apache.commons.collections.MapIterator 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
java.util.Collections.synchronizedMap(Map) . This class may throw
exceptions when accessed by concurrent threads without synchronization.
since:
Commons Collections 3.0
version:
$Revision: 348007 $ $Date: 2005-11-21 22:52:57 +0000 (Mon, 21 Nov 2005) $
author:
Stephen Colebourne |
| Constructor Summary | |
| public | HashedMap()
Constructs a new empty map with default size and load factor. | | public | HashedMap(int initialCapacity)
Constructs a new, empty map with the specified initial capacity. | | public | HashedMap(int initialCapacity, float loadFactor)
Constructs a new, empty map with the specified initial capacity and
load factor. | | public | HashedMap(Map map)
Constructor copying elements from another map. |
| Method Summary | |
| public Object | clone()
Clones the map without cloning the keys or values. |
| HashedMap | | public HashedMap()(Code) | | Constructs a new empty map with default size and load factor.
|
| HashedMap | | public HashedMap(int initialCapacity)(Code) | | Constructs a new, empty map with the specified initial capacity.
Parameters:
initialCapacity - the initial capacity
throws:
IllegalArgumentException - if the initial capacity is less than one |
| HashedMap | | public HashedMap(int initialCapacity, float loadFactor)(Code) | | Constructs a new, empty map with the specified initial capacity and
load factor.
Parameters:
initialCapacity - the initial capacity
Parameters:
loadFactor - the load factor
throws:
IllegalArgumentException - if the initial capacity is less than one
throws:
IllegalArgumentException - if the load factor is less than zero |
| HashedMap | | public HashedMap(Map map)(Code) | | Constructor copying elements from another map.
Parameters:
map - the map to copy
throws:
NullPointerException - if the map is null |
| clone | | public Object clone()(Code) | | Clones the map without cloning the keys or values.
a shallow clone |
| Methods inherited from org.apache.commons.collections.map.AbstractHashedMap | protected void addEntry(HashEntry entry, int hashIndex)(Code)(Java Doc)
protected void addMapping(int hashIndex, int hashCode, Object key, Object value)(Code)(Java Doc)
protected int calculateNewCapacity(int proposedCapacity)(Code)(Java Doc)
protected int calculateThreshold(int newCapacity, float factor)(Code)(Java Doc)
protected void checkCapacity()(Code)(Java Doc)
public void clear()(Code)(Java Doc)
protected Object clone()(Code)(Java Doc)
public boolean containsKey(Object key)(Code)(Java Doc)
public boolean containsValue(Object value)(Code)(Java Doc)
protected Object convertKey(Object key)(Code)(Java Doc)
protected HashEntry createEntry(HashEntry next, int hashCode, Object key, Object value)(Code)(Java Doc)
protected Iterator createEntrySetIterator()(Code)(Java Doc)
protected Iterator createKeySetIterator()(Code)(Java Doc)
protected Iterator createValuesIterator()(Code)(Java Doc)
protected void destroyEntry(HashEntry entry)(Code)(Java Doc)
protected void doReadObject(ObjectInputStream in) throws IOException, ClassNotFoundException(Code)(Java Doc)
protected void doWriteObject(ObjectOutputStream out) throws IOException(Code)(Java Doc)
protected void ensureCapacity(int newCapacity)(Code)(Java Doc)
protected int entryHashCode(HashEntry entry)(Code)(Java Doc)
protected Object entryKey(HashEntry entry)(Code)(Java Doc)
protected HashEntry entryNext(HashEntry entry)(Code)(Java Doc)
public Set entrySet()(Code)(Java Doc)
protected Object entryValue(HashEntry entry)(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
public Object get(Object key)(Code)(Java Doc)
protected HashEntry getEntry(Object key)(Code)(Java Doc)
protected int hash(Object key)(Code)(Java Doc)
public int hashCode()(Code)(Java Doc)
protected int hashIndex(int hashCode, int dataSize)(Code)(Java Doc)
protected void init()(Code)(Java Doc)
public boolean isEmpty()(Code)(Java Doc)
protected boolean isEqualKey(Object key1, Object key2)(Code)(Java Doc)
protected boolean isEqualValue(Object value1, Object value2)(Code)(Java Doc)
public Set keySet()(Code)(Java Doc)
public MapIterator mapIterator()(Code)(Java Doc)
public Object put(Object key, Object value)(Code)(Java Doc)
public void putAll(Map map)(Code)(Java Doc)
public Object remove(Object key)(Code)(Java Doc)
protected void removeEntry(HashEntry entry, int hashIndex, HashEntry previous)(Code)(Java Doc)
protected void removeMapping(HashEntry entry, int hashIndex, HashEntry previous)(Code)(Java Doc)
protected void reuseEntry(HashEntry entry, int hashIndex, int hashCode, Object key, Object value)(Code)(Java Doc)
public int size()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
protected void updateEntry(HashEntry entry, Object newValue)(Code)(Java Doc)
public Collection values()(Code)(Java Doc)
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