Package com.pnfsoftware.jeb.util.collect

Class WeakValueMap<K,V>

java.lang.Object

com.pnfsoftware.jeb.util.collect.WeakValueMap<K,V>

Type Parameters:

K -

V -

All Implemented Interfaces:

Map<K,V>

@Ser
public class WeakValueMap<K,V>
extends Object
implements Map<K,V>

A map whose values (and only the values, not the keys) do not prevent garbage collection of entries. The "opposite" of WeakHashMap. Key-value pairs with a null value should not be inserted to this map; no guarantee on retrieval and persistence is provided for null values.

This map object supports serializability. It is serializable if its key and value types are also serializable.

See Also:

• WeakHashMap
• WeakKeyValueMap

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K extends Object,V extends Object>

Constructor Summary

Constructors

Constructor	Description
WeakValueMap()
WeakValueMap(int initialCapacity)
WeakValueMap(int initialCapacity, float loadFactor)
WeakValueMap(Map<K,V> t)

Method Summary

Modifier and Type	Method	Description
void	clear()
boolean	containsKey(Object key)
boolean	containsValue(Object value)
Set<Map.Entry<K,V>>	entrySet()
boolean	equals(Object obj)
V	get(Object key)
int	hashCode()
boolean	isEmpty()
Set<K>	keySet()
V	put(K key, V value)
void	putAll(Map<? extends K,? extends V> m)
V	remove(Object key)
int	size()
String	toString()
Collection<V>	values()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAll

Constructor Details

WeakValueMap

public WeakValueMap(int initialCapacity,
 float loadFactor)

WeakValueMap

public WeakValueMap(int initialCapacity)

WeakValueMap

public WeakValueMap()

WeakValueMap

public WeakValueMap(Map<K,V> t)

Method Details

clear

public void clear()

Specified by:

clear in interface Map<K,V>

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Map<K,V>

containsValue

public boolean containsValue(Object value)

Specified by:

containsValue in interface Map<K,V>

entrySet

public Set<Map.Entry<K,V>> entrySet()

Specified by:

entrySet in interface Map<K,V>

get

public V get(Object key)

Specified by:

get in interface Map<K,V>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<K,V>

keySet

public Set<K> keySet()

Specified by:

keySet in interface Map<K,V>

put

public V put(K key,
 V value)

Specified by:

put in interface Map<K,V>

putAll

public void putAll(Map<? extends K,? extends V> m)

Specified by:

putAll in interface Map<K,V>

remove

public V remove(Object key)

Specified by:

remove in interface Map<K,V>

size

public int size()

Specified by:

size in interface Map<K,V>

values

public Collection<V> values()

Specified by:

values in interface Map<K,V>

hashCode

public int hashCode()

Specified by:

hashCode in interface Map<K,V>

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Specified by:

equals in interface Map<K,V>

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object