com.alibaba.fastjson.util

类 AntiCollisionHashMap<K,V>

java.lang.Object

java.util.AbstractMap<K,V>

com.alibaba.fastjson.util.AntiCollisionHashMap<K,V>

所有已实现的接口:

Serializable, Cloneable, Map<K,V>

已过时。

public class AntiCollisionHashMap<K,V>
extends AbstractMap<K,V>
implements Map<K,V>, Cloneable, Serializable

另请参阅:

序列化表格

嵌套类概要

从类继承的嵌套类/接口 java.util.AbstractMap

AbstractMap.SimpleEntry<K,V>, AbstractMap.SimpleImmutableEntry<K,V>

构造器概要

构造器

构造器和说明
AntiCollisionHashMap() 已过时。 Constructs an empty SafelyHashMap with the default initial capacity (16) and the default load factor (0.75).
AntiCollisionHashMap(int initialCapacity) 已过时。 Constructs an empty SafelyHashMap with the specified initial capacity and the default load factor (0.75).
AntiCollisionHashMap(int initialCapacity, float loadFactor) 已过时。
AntiCollisionHashMap(Map<? extends K,? extends V> m) 已过时。 Constructs a new SafelyHashMap with the same mappings as the specified Map.

方法概要

限定符和类型	方法和说明
void	clear() 已过时。 Removes all of the mappings from this map.
Object	clone() 已过时。 Returns a shallow copy of this SafelyHashMap instance: the keys and values themselves are not cloned.
boolean	containsKey(Object key) 已过时。 Returns true if this map contains a mapping for the specified key.
boolean	containsValue(Object value) 已过时。 Returns true if this map maps one or more keys to the specified value.
Set<Map.Entry<K,V>>	entrySet() 已过时。 Returns a Set view of the mappings contained in this map.
V	get(Object key) 已过时。 Returns the value to which the specified key is mapped, or null if this map contains no mapping for the key.
boolean	isEmpty() 已过时。 Returns true if this map contains no key-value mappings.
Set<K>	keySet() 已过时。 Returns a Set view of the keys contained in this map.
V	put(K key, V value) 已过时。 Associates the specified value with the specified key in this map.
void	putAll(Map<? extends K,? extends V> m) 已过时。 Copies all of the mappings from the specified map to this map.
V	remove(Object key) 已过时。 Removes the mapping for the specified key from this map if present.
int	size() 已过时。 Returns the number of key-value mappings in this map.
Collection<V>	values() 已过时。 Returns a Collection view of the values contained in this map.

从类继承的方法 java.util.AbstractMap

equals, hashCode, toString

从类继承的方法 java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

从接口继承的方法 java.util.Map

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

构造器详细资料

AntiCollisionHashMap

public AntiCollisionHashMap(int initialCapacity,
                            float loadFactor)

已过时。

AntiCollisionHashMap

public AntiCollisionHashMap(int initialCapacity)

已过时。

Constructs an empty SafelyHashMap with the specified initial capacity and the default load factor (0.75).

参数:

initialCapacity - the initial capacity.

抛出:

IllegalArgumentException - if the initial capacity is negative.

AntiCollisionHashMap

public AntiCollisionHashMap()

已过时。

Constructs an empty SafelyHashMap with the default initial capacity (16) and the default load factor (0.75).

AntiCollisionHashMap

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

已过时。

Constructs a new SafelyHashMap with the same mappings as the specified Map. The SafelyHashMap is created with default load factor (0.75) and an initial capacity sufficient to hold the mappings in the specified Map.

参数:

m - the map whose mappings are to be placed in this map

抛出:

NullPointerException - if the specified map is null

方法详细资料

size

public int size()

已过时。

Returns the number of key-value mappings in this map.

指定者:

size 在接口中 Map<K,V>

覆盖:

size 在类中 AbstractMap<K,V>

返回:

the number of key-value mappings in this map

isEmpty

public boolean isEmpty()

已过时。

Returns true if this map contains no key-value mappings.

指定者:

isEmpty 在接口中 Map<K,V>

覆盖:

isEmpty 在类中 AbstractMap<K,V>

返回:

true if this map contains no key-value mappings

get

public V get(Object key)

已过时。

Returns the value to which the specified key is mapped, or null if this map contains no mapping for the key.

More formally, if this map contains a mapping from a key k to a value v such that (key==null ? k==null : key.equals(k)), then this method returns v; otherwise it returns null. (There can be at most one such mapping.)

A return value of null does not necessarily indicate that the map contains no mapping for the key; it's also possible that the map explicitly maps the key to null. The containsKey operation may be used to distinguish these two cases.

指定者:

get 在接口中 Map<K,V>

覆盖:

get 在类中 AbstractMap<K,V>

另请参阅:

put(Object, Object)

containsKey

public boolean containsKey(Object key)

已过时。

Returns true if this map contains a mapping for the specified key.

指定者:

containsKey 在接口中 Map<K,V>

覆盖:

containsKey 在类中 AbstractMap<K,V>

参数:

key - The key whose presence in this map is to be tested

返回:

true if this map contains a mapping for the specified key.

put

public V put(K key,
             V value)

已过时。

Associates the specified value with the specified key in this map. If the map previously contained a mapping for the key, the old value is replaced.

指定者:

put 在接口中 Map<K,V>

覆盖:

put 在类中 AbstractMap<K,V>

参数:

key - key with which the specified value is to be associated

value - value to be associated with the specified key

返回:

the previous value associated with key, or null if there was no mapping for key. (A null return can also indicate that the map previously associated null with key.)

putAll

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

已过时。

Copies all of the mappings from the specified map to this map. These mappings will replace any mappings that this map had for any of the keys currently in the specified map.

指定者:

putAll 在接口中 Map<K,V>

覆盖:

putAll 在类中 AbstractMap<K,V>

参数:

m - mappings to be stored in this map

抛出:

NullPointerException - if the specified map is null

remove

public V remove(Object key)

已过时。

Removes the mapping for the specified key from this map if present.

指定者:

remove 在接口中 Map<K,V>

覆盖:

remove 在类中 AbstractMap<K,V>

参数:

key - key whose mapping is to be removed from the map

返回:

the previous value associated with key, or null if there was no mapping for key. (A null return can also indicate that the map previously associated null with key.)

clear

public void clear()

已过时。

Removes all of the mappings from this map. The map will be empty after this call returns.

指定者:

clear 在接口中 Map<K,V>

覆盖:

clear 在类中 AbstractMap<K,V>

containsValue

public boolean containsValue(Object value)

已过时。

Returns true if this map maps one or more keys to the specified value.

指定者:

containsValue 在接口中 Map<K,V>

覆盖:

containsValue 在类中 AbstractMap<K,V>

参数:

value - value whose presence in this map is to be tested

返回:

true if this map maps one or more keys to the specified value

clone

public Object clone()

已过时。

Returns a shallow copy of this SafelyHashMap instance: the keys and values themselves are not cloned.

覆盖:

clone 在类中 AbstractMap<K,V>

返回:

a shallow copy of this map

keySet

public Set<K> keySet()

已过时。

Returns a Set view of the keys contained in this map. The set is backed by the map, so changes to the map are reflected in the set, and vice-versa. If the map is modified while an iteration over the set is in progress (except through the iterator's own remove operation), the results of the iteration are undefined. The set supports element removal, which removes the corresponding mapping from the map, via the Iterator.remove, Set.remove, removeAll, retainAll, and clear operations. It does not support the add or addAll operations.

指定者:

keySet 在接口中 Map<K,V>

覆盖:

keySet 在类中 AbstractMap<K,V>

values

public Collection<V> values()

已过时。

Returns a Collection view of the values contained in this map. The collection is backed by the map, so changes to the map are reflected in the collection, and vice-versa. If the map is modified while an iteration over the collection is in progress (except through the iterator's own remove operation), the results of the iteration are undefined. The collection supports element removal, which removes the corresponding mapping from the map, via the Iterator.remove, Collection.remove, removeAll, retainAll and clear operations. It does not support the add or addAll operations.

指定者:

values 在接口中 Map<K,V>

覆盖:

values 在类中 AbstractMap<K,V>

entrySet

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

已过时。

Returns a Set view of the mappings contained in this map. The set is backed by the map, so changes to the map are reflected in the set, and vice-versa. If the map is modified while an iteration over the set is in progress (except through the iterator's own remove operation, or through the setValue operation on a map entry returned by the iterator) the results of the iteration are undefined. The set supports element removal, which removes the corresponding mapping from the map, via the Iterator.remove, Set.remove, removeAll , retainAll and clear operations. It does not support the add or addAll operations.

指定者:

entrySet 在接口中 Map<K,V>

指定者:

entrySet 在类中 AbstractMap<K,V>

返回:

a set view of the mappings contained in this map