com.jn.langx.util.collection

类 WeakIdentityHashMap<K,V>

java.lang.Object

com.jn.langx.util.collection.WeakIdentityHashMap<K,V>

所有已实现的接口:

Map<K,V>

public class WeakIdentityHashMap<K,V>
extends Object
implements Map<K,V>

Implements a combination of WeakHashMap and IdentityHashMap. Useful for caches that need to key off of a == comparison instead of a .equals.

This class is not a general-purpose Map implementation! While this class implements the Map interface, it intentionally violates Map's general contract, which mandates the use of the equals method when comparing objects. This class is designed for use only in the rare cases wherein reference-equality semantics are required.

Note that this implementation is not synchronized.

嵌套类概要

从接口继承的嵌套类/接口 java.util.Map

Map.Entry<K,V>

构造器概要

构造器

构造器和说明
WeakIdentityHashMap()

方法概要

限定符和类型	方法和说明
void	clear()
boolean	containsKey(Object key)
boolean	containsValue(Object value)
Set<Map.Entry<K,V>>	entrySet()
boolean	equals(Object o)
V	get(Object key)
int	hashCode()
boolean	isEmpty()
Set<K>	keySet()
V	put(K key, V value)
void	putAll(Map t)
V	remove(Object key)
int	size()
Collection<V>	values()

从类继承的方法 java.lang.Object

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

从接口继承的方法 java.util.Map

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

构造器详细资料

WeakIdentityHashMap

public WeakIdentityHashMap()

方法详细资料

clear

public void clear()

指定者:

clear 在接口中 Map<K,V>

containsKey

public boolean containsKey(Object key)

指定者:

containsKey 在接口中 Map<K,V>

containsValue

public boolean containsValue(Object value)

指定者:

containsValue 在接口中 Map<K,V>

entrySet

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

指定者:

entrySet 在接口中 Map<K,V>

keySet

public Set<K> keySet()

指定者:

keySet 在接口中 Map<K,V>

equals

public boolean equals(Object o)

指定者:

equals 在接口中 Map<K,V>

覆盖:

equals 在类中 Object

get

public V get(Object key)

指定者:

get 在接口中 Map<K,V>

put

public V put(K key,
             V value)

指定者:

put 在接口中 Map<K,V>

hashCode

public int hashCode()

指定者:

hashCode 在接口中 Map<K,V>

覆盖:

hashCode 在类中 Object

isEmpty

public boolean isEmpty()

指定者:

isEmpty 在接口中 Map<K,V>

putAll

public void putAll(Map t)

指定者:

putAll 在接口中 Map<K,V>

remove

public V remove(Object key)

指定者:

remove 在接口中 Map<K,V>

size

public int size()

指定者:

size 在接口中 Map<K,V>

values

public Collection<V> values()

指定者:

values 在接口中 Map<K,V>