public class IdentityHashSet<E> extends AbstractSet<E> implements Set<E>, Cloneable, Serializable
| Constructor and Description |
|---|
IdentityHashSet() |
IdentityHashSet(Collection<? extends E> c) |
IdentityHashSet(int expectedMaxSize) |
| Modifier and Type | Method and Description |
|---|---|
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.
|
IdentityHashSet<E> |
clone()
Returns a shallow copy of this HashSet instance: the elements
themselves are not cloned.
|
boolean |
contains(Object o)
Returns true if this set contains the specified element.
|
boolean |
isEmpty()
Returns true if this set contains no elements.
|
Iterator<E> |
iterator()
Returns an iterator over the elements in this set.
|
boolean |
remove(Object o)
Removes the specified element from this set if it is present.
|
int |
size()
Returns the number of elements in this set (its cardinality).
|
equals, hashCode, removeAlladdAll, containsAll, retainAll, toArray, toArray, toStringpublic IdentityHashSet()
public IdentityHashSet(Collection<? extends E> c)
public IdentityHashSet(int expectedMaxSize)
public Iterator<E> iterator()
iterator in interface Iterable<E>iterator in interface Collection<E>iterator in interface Set<E>iterator in class AbstractCollection<E>ConcurrentModificationExceptionpublic 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>o - element whose presence in this set is to be testedpublic boolean add(E e)
add in interface Collection<E>add in interface Set<E>add in class AbstractCollection<E>e - element to be added to this setpublic boolean remove(Object o)
remove in interface Collection<E>remove in interface Set<E>remove in class AbstractCollection<E>o - object to be removed from this set, if presentpublic void clear()
clear in interface Collection<E>clear in interface Set<E>clear in class AbstractCollection<E>public IdentityHashSet<E> clone()
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