Package org.aoju.bus.core.collection

Class ConcurrentHashSet<E>

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractSet<E>

org.aoju.bus.core.collection.ConcurrentHashSet<E>

Type Parameters:

E - 元素类型

All Implemented Interfaces:

Serializable, Iterable<E>, Collection<E>, Set<E>

public class ConcurrentHashSet<E>
extends AbstractSet<E>
implements Serializable

通过ConcurrentHashMap实现的线程安全

Since:

Java 17+

Author:

Kimi Liu

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
ConcurrentHashSet()	触发因子为默认的0.75
ConcurrentHashSet(int initialCapacity)	触发因子为默认的0.75
ConcurrentHashSet(int initialCapacity, float loadFactor)	构造
ConcurrentHashSet(int initialCapacity, float loadFactor, int concurrencyLevel)	构造
ConcurrentHashSet(Iterable<E> iter)	从已有集合中构造

Method Summary

Modifier and Type	Method	Description
boolean	add(E e)
void	clear()
boolean	contains(Object o)
boolean	isEmpty()
Iterator<E>	iterator()
boolean	remove(Object o)
int	size()

Methods inherited from class java.util.AbstractSet

equals, hashCode, removeAll

Methods inherited from class java.util.AbstractCollection

addAll, containsAll, retainAll, toArray, toArray, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream, toArray

Methods inherited from interface java.lang.Iterable

forEach

Methods inherited from interface java.util.Set

addAll, containsAll, retainAll, spliterator, toArray, toArray

Constructor Details

ConcurrentHashSet

public ConcurrentHashSet()

触发因子为默认的0.75

ConcurrentHashSet

public ConcurrentHashSet(int initialCapacity)

触发因子为默认的0.75

Parameters:

initialCapacity - 初始大小

ConcurrentHashSet

public ConcurrentHashSet(int initialCapacity,
 float loadFactor)

构造

Parameters:

initialCapacity - 初始大小

loadFactor - 加载因子。此参数决定数据增长时触发的百分比

ConcurrentHashSet

public ConcurrentHashSet(int initialCapacity,
 float loadFactor,
 int concurrencyLevel)

构造

Parameters:

initialCapacity - 初始大小

loadFactor - 触发因子。此参数决定数据增长时触发的百分比

concurrencyLevel - 线程并发度

ConcurrentHashSet

public ConcurrentHashSet(Iterable<E> iter)

从已有集合中构造

Parameters:

iter - Iterable

Method Details

iterator

public Iterator<E> iterator()

Specified by:

iterator in interface Collection<E>

Specified by:

iterator in interface Iterable<E>

Specified by:

iterator in interface Set<E>

Specified by:

iterator in class AbstractCollection<E>

size

public int size()

Specified by:

size in interface Collection<E>

Specified by:

size in interface Set<E>

Specified by:

size in class AbstractCollection<E>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Collection<E>

Specified by:

isEmpty in interface Set<E>

Overrides:

isEmpty in class AbstractCollection<E>

contains

public boolean contains(Object o)

Specified by:

contains in interface Collection<E>

Specified by:

contains in interface Set<E>

Overrides:

contains in class AbstractCollection<E>

add

public boolean add(E e)

Specified by:

add in interface Collection<E>

Specified by:

add in interface Set<E>

Overrides:

add in class AbstractCollection<E>

remove

public boolean remove(Object o)

Specified by:

remove in interface Collection<E>

Specified by:

remove in interface Set<E>

Overrides:

remove in class AbstractCollection<E>

clear

public void clear()

Specified by:

clear in interface Collection<E>

Specified by:

clear in interface Set<E>

Overrides:

clear in class AbstractCollection<E>