public class ConcurrentHashSet<E> extends AbstractSet<E> implements Serializable
ConcurrentHashMap to deal with the fact that the
JDK does not have a proper concurrent Set implementation that uses efficient lock striping.
Note that values are stored as keys in the underlying Map, with a static dummy object as value.| Modifier and Type | Field and Description |
|---|---|
protected ConcurrentMap<E,Object> |
map |
| Constructor and Description |
|---|
ConcurrentHashSet() |
ConcurrentHashSet(int concurrencyLevel) |
ConcurrentHashSet(int initSize,
float loadFactor,
int concurrencyLevel)
Params passed in to the underlying CHM.
|
| Modifier and Type | Method and Description |
|---|---|
boolean |
add(E o) |
boolean |
addAll(Collection<? extends E> c) |
void |
clear() |
boolean |
contains(Object o) |
boolean |
containsAll(Collection<?> c) |
boolean |
isEmpty() |
Iterator<E> |
iterator() |
boolean |
remove(Object o) |
boolean |
removeAll(Collection<?> c) |
boolean |
retainAll(Collection<?> c) |
int |
size() |
Object[] |
toArray() |
<T> T[] |
toArray(T[] a) |
equals, hashCodetoStringclone, finalize, getClass, notify, notifyAll, wait, wait, waitspliteratorparallelStream, removeIf, streamprotected final ConcurrentMap<E,Object> map
public ConcurrentHashSet()
public ConcurrentHashSet(int concurrencyLevel)
concurrencyLevel - passed in to the underlying CHM. See ConcurrentHashMap.ConcurrentHashMap(int,
float, int) javadocs for details.public ConcurrentHashSet(int initSize,
float loadFactor,
int concurrencyLevel)
ConcurrentHashMap.ConcurrentHashMap(int,
float, int) javadocs for details.public int size()
size in interface Collection<E>size in interface Set<E>size in class AbstractCollection<E>public boolean isEmpty()
isEmpty in interface Collection<E>isEmpty in interface Set<E>isEmpty in class AbstractCollection<E>public boolean contains(Object o)
contains in interface Collection<E>contains in interface Set<E>contains in class AbstractCollection<E>public Object[] toArray()
toArray in interface Collection<E>toArray in interface Set<E>toArray in class AbstractCollection<E>public <T> T[] toArray(T[] a)
toArray in interface Collection<E>toArray in interface Set<E>toArray in class AbstractCollection<E>public boolean add(E o)
add in interface Collection<E>add in interface Set<E>add in class AbstractCollection<E>public boolean remove(Object o)
remove in interface Collection<E>remove in interface Set<E>remove in class AbstractCollection<E>public boolean containsAll(Collection<?> c)
containsAll in interface Collection<E>containsAll in interface Set<E>containsAll in class AbstractCollection<E>public boolean addAll(Collection<? extends E> c)
addAll in interface Collection<E>addAll in interface Set<E>addAll in class AbstractCollection<E>public boolean retainAll(Collection<?> c)
retainAll in interface Collection<E>retainAll in interface Set<E>retainAll in class AbstractCollection<E>public boolean removeAll(Collection<?> c)
removeAll in interface Collection<E>removeAll in interface Set<E>removeAll in class AbstractSet<E>public void clear()
clear in interface Collection<E>clear in interface Set<E>clear in class AbstractCollection<E>Copyright © 2018 JBoss, a division of Red Hat. All rights reserved.