org.jboss.util.collection
Class WeakValueHashMap<K,V>
java.lang.Object
java.util.AbstractMap<K,V>
org.jboss.util.collection.WeakValueHashMap<K,V>
- Type Parameters:
K
- the key typeV
- the value type
- All Implemented Interfaces:
- Map<K,V>
public class WeakValueHashMap<K,V>
- extends AbstractMap<K,V>
This Map will remove entries when the value in the map has been
cleaned from garbage collection
- Version:
- $Revision: 2517 $
- Author:
- Bill Burke, Adrian Brock
Nested classes/interfaces inherited from interface java.util.Map |
Map.Entry<K,V> |
Constructor Summary |
WeakValueHashMap()
Constructs a new, empty WeakHashMap with the default
initial capacity and the default load factor, which is
0.75 . |
WeakValueHashMap(int initialCapacity)
Constructs a new, empty WeakHashMap with the given
initial capacity and the default load factor, which is
0.75 . |
WeakValueHashMap(int initialCapacity,
float loadFactor)
Constructs a new, empty WeakHashMap with the given
initial capacity and the given load factor. |
WeakValueHashMap(Map<K,V> t)
Constructs a new WeakHashMap with the same mappings as the
specified Map. |
WeakValueHashMap
public WeakValueHashMap(int initialCapacity,
float loadFactor)
- Constructs a new, empty
WeakHashMap
with the given
initial capacity and the given load factor.
- Parameters:
initialCapacity
- The initial capacity of the
WeakHashMap
loadFactor
- The load factor of the WeakHashMap
- Throws:
IllegalArgumentException
- If the initial capacity is less than
zero, or if the load factor is
nonpositive
WeakValueHashMap
public WeakValueHashMap(int initialCapacity)
- Constructs a new, empty
WeakHashMap
with the given
initial capacity and the default load factor, which is
0.75
.
- Parameters:
initialCapacity
- The initial capacity of the
WeakHashMap
- Throws:
IllegalArgumentException
- If the initial capacity is less than
zero
WeakValueHashMap
public WeakValueHashMap()
- Constructs a new, empty
WeakHashMap
with the default
initial capacity and the default load factor, which is
0.75
.
WeakValueHashMap
public WeakValueHashMap(Map<K,V> t)
- Constructs a new
WeakHashMap
with the same mappings as the
specified Map. The WeakHashMap
is created with an
initial capacity of twice the number of mappings in the specified map
or 11 (whichever is greater), and a default load factor, which is
0.75.
- Parameters:
t
- the map whose mappings are to be placed in this map.- Since:
- 1.3
size
public int size()
- Specified by:
size
in interface Map<K,V>
- Overrides:
size
in class AbstractMap<K,V>
containsKey
public boolean containsKey(Object key)
- Specified by:
containsKey
in interface Map<K,V>
- Overrides:
containsKey
in class AbstractMap<K,V>
get
public V get(Object key)
- Specified by:
get
in interface Map<K,V>
- Overrides:
get
in class AbstractMap<K,V>
put
public V put(K key,
V value)
- Specified by:
put
in interface Map<K,V>
- Overrides:
put
in class AbstractMap<K,V>
remove
public V remove(Object key)
- Specified by:
remove
in interface Map<K,V>
- Overrides:
remove
in class AbstractMap<K,V>
entrySet
public Set<Map.Entry<K,V>> entrySet()
- Specified by:
entrySet
in interface Map<K,V>
- Specified by:
entrySet
in class AbstractMap<K,V>
clear
public void clear()
- Specified by:
clear
in interface Map<K,V>
- Overrides:
clear
in class AbstractMap<K,V>
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