程序包 com.alibaba.dubbo.common.utils

类 ConcurrentHashSet<E>

<E>

<E>

com.alibaba.dubbo.common.utils.ConcurrentHashSet<E>

所有已实现的接口:

, <E>, <E>, <E>

public class ConcurrentHashSet<E>
extends <E>
implements <E>, 

另请参阅:

序列化表格

构造器概要

构造器

构造器	说明
ConcurrentHashSet()
ConcurrentHashSet(int initialCapacity)

方法概要

修饰符和类型	方法	说明
boolean	add(E e)	Adds the specified element to this set if it is not already present.
void	clear()	Removes all of the elements from this set.
boolean	o)	Returns true if this set contains the specified element.
boolean	isEmpty()	Returns true if this set contains no elements.
<E>	iterator()	Returns an iterator over the elements in this set.
boolean	o)	Removes the specified element from this set if it is present.
int	size()	Returns the number of elements in this set (its cardinality).

从类继承的方法 java.util.

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从类继承的方法 java.util.

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从类继承的方法 java.lang.

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从接口继承的方法 java.util.

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从接口继承的方法 java.lang.

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构造器详细资料

ConcurrentHashSet

public ConcurrentHashSet()

ConcurrentHashSet

public ConcurrentHashSet(int initialCapacity)

方法详细资料

iterator

public <E> iterator()

Returns an iterator over the elements in this set. The elements are returned in no particular order.

指定者:

在接口中 <E>

指定者:

在接口中 <E>

指定者:

在接口中 <E>

指定者:

在类中 <E>

返回:

an Iterator over the elements in this set

另请参阅:

size

public int size()

Returns the number of elements in this set (its cardinality).

指定者:

在接口中 <E>

指定者:

在接口中 <E>

指定者:

在类中 <E>

返回:

the number of elements in this set (its cardinality)

isEmpty

public boolean isEmpty()

Returns true if this set contains no elements.

指定者:

在接口中 <E>

指定者:

在接口中 <E>

覆盖:

在类中 <E>

返回:

true if this set contains no elements

contains

public boolean contains( o)

Returns true if this set contains the specified element. More formally, returns true if and only if this set contains an element e such that (o==null ? e==null : o.equals(e)).

指定者:

在接口中 <E>

指定者:

在接口中 <E>

覆盖:

在类中 <E>

参数:

o - element whose presence in this set is to be tested

返回:

true if this set contains the specified element

add

public boolean add(E e)

Adds the specified element to this set if it is not already present. More formally, adds the specified element e to this set if this set contains no element e2 such that (e==null ? e2==null : e.equals(e2)). If this set already contains the element, the call leaves the set unchanged and returns false.

指定者:

在接口中 <E>

指定者:

在接口中 <E>

覆盖:

在类中 <E>

参数:

e - element to be added to this set

返回:

true if this set did not already contain the specified element

remove

public boolean remove( o)

Removes the specified element from this set if it is present. More formally, removes an element e such that (o==null ? e==null : o.equals(e)), if this set contains such an element. Returns true if this set contained the element (or equivalently, if this set changed as a result of the call). (This set will not contain the element once the call returns.)

指定者:

在接口中 <E>

指定者:

在接口中 <E>

覆盖:

在类中 <E>

参数:

o - object to be removed from this set, if present

返回:

true if the set contained the specified element

clear

public void clear()

Removes all of the elements from this set. The set will be empty after this call returns.

指定者:

在接口中 <E>

指定者:

在接口中 <E>

覆盖:

在类中 <E>