Package com.google.common.collect

Class SingletonImmutableSet<E>

java.lang.Object

java.util.AbstractCollection<E>

com.google.common.collect.ImmutableCollection<E>

com.google.common.collect.ImmutableSet<E>

com.google.common.collect.SingletonImmutableSet<E>

All Implemented Interfaces:

java.io.Serializable, java.lang.Iterable<E>, java.util.Collection<E>, java.util.Set<E>

final class SingletonImmutableSet<E>
extends ImmutableSet<E>

Implementation of ImmutableSet with exactly one element.

Nested Class Summary

Nested classes/interfaces inherited from class com.google.common.collect.ImmutableSet

ImmutableSet.Builder<E>, ImmutableSet.CachingAsList<E>, ImmutableSet.Indexed<E>

Field Summary

Fields

Modifier and Type	Field	Description
(package private) E	element

Fields inherited from class com.google.common.collect.ImmutableSet

MAX_TABLE_SIZE, SPLITERATOR_CHARACTERISTICS

Constructor Summary

Constructors

Constructor	Description
SingletonImmutableSet(E element)

Method Summary

Modifier and Type	Method	Description
ImmutableList<E>	asList()	Returns an ImmutableList containing the same elements, in the same order, as this collection.
boolean	contains(java.lang.Object target)
(package private) int	copyIntoArray(java.lang.Object[] dst, int offset)	Copies the contents of this immutable collection into the specified array at the specified offset.
int	hashCode()
(package private) boolean	isPartialView()	Returns true if this immutable collection's implementation contains references to user-created objects that aren't accessible via this collection's methods.
UnmodifiableIterator<E>	iterator()	Returns an unmodifiable iterator across the elements in this collection.
int	size()
java.lang.String	toString()

Methods inherited from class com.google.common.collect.ImmutableSet

builder, builderWithExpectedSize, chooseTableSize, copyOf, copyOf, copyOf, copyOf, equals, isHashCodeFast, of, of, of, of, of, of, of, toImmutableSet, writeReplace

Methods inherited from class com.google.common.collect.ImmutableCollection

add, addAll, clear, internalArray, internalArrayEnd, internalArrayStart, remove, removeAll, removeIf, retainAll, spliterator, toArray, toArray

Methods inherited from class java.util.AbstractCollection

containsAll, isEmpty

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

add, addAll, clear, containsAll, isEmpty, remove, removeAll, retainAll, spliterator, toArray, toArray

Field Detail

element

final transient E element

Constructor Detail

SingletonImmutableSet

SingletonImmutableSet(E element)

Method Detail

size

public int size()

Specified by:

size in interface java.util.Collection<E>

Specified by:

size in interface java.util.Set<E>

Specified by:

size in class java.util.AbstractCollection<E>

contains

public boolean contains(@CheckForNull
                        java.lang.Object target)

Specified by:

contains in interface java.util.Collection<E>

Specified by:

contains in interface java.util.Set<E>

Specified by:

contains in class ImmutableCollection<E>

iterator

public UnmodifiableIterator<E> iterator()

Description copied from class: ImmutableCollection

Returns an unmodifiable iterator across the elements in this collection.

Specified by:

iterator in interface java.util.Collection<E>

Specified by:

iterator in interface java.lang.Iterable<E>

Specified by:

iterator in interface java.util.Set<E>

Specified by:

iterator in class ImmutableSet<E>

asList

public ImmutableList<E> asList()

Description copied from class: ImmutableCollection

Returns an ImmutableList containing the same elements, in the same order, as this collection.

Performance note: in most cases this method can return quickly without actually copying anything. The exact circumstances under which the copy is performed are undefined and subject to change.

Overrides:

asList in class ImmutableCollection<E>

isPartialView

boolean isPartialView()

Description copied from class: ImmutableCollection

Returns true if this immutable collection's implementation contains references to user-created objects that aren't accessible via this collection's methods. This is generally used to determine whether copyOf implementations should make an explicit copy to avoid memory leaks.

Specified by:

isPartialView in class ImmutableCollection<E>

copyIntoArray

int copyIntoArray(java.lang.Object[] dst,
                  int offset)

Description copied from class: ImmutableCollection

Copies the contents of this immutable collection into the specified array at the specified offset. Returns offset + size().

Overrides:

copyIntoArray in class ImmutableCollection<E>

hashCode

public final int hashCode()

Specified by:

hashCode in interface java.util.Collection<E>

Specified by:

hashCode in interface java.util.Set<E>

Overrides:

hashCode in class ImmutableSet<E>

toString

public java.lang.String toString()

Overrides:

toString in class java.util.AbstractCollection<E>