ObjectSets.Singleton (fastutil 7.0.13)

java.lang.Object
- java.util.AbstractCollection<K>
- - it.unimi.dsi.fastutil.objects.AbstractObjectCollection<K>
  - - it.unimi.dsi.fastutil.objects.AbstractObjectSet<K>
    - - it.unimi.dsi.fastutil.objects.ObjectSets.Singleton<K>

All Implemented Interfaces:

ObjectCollection<K>, ObjectIterable<K>, ObjectSet<K>, java.io.Serializable, java.lang.Cloneable, java.lang.Iterable<K>, java.util.Collection<K>, java.util.Set<K>

Direct Known Subclasses:

ObjectSortedSets.Singleton

Enclosing class:

ObjectSets
```
public static class ObjectSets.Singleton<K>
extends AbstractObjectSet<K>
implements java.io.Serializable, java.lang.Cloneable
```
An immutable class representing a type-specific singleton set.
This class may be useful to implement your own in case you subclass a type-specific set.

See Also:

Serialized Form

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`boolean`	`add(K k)`
`boolean`	`addAll(java.util.Collection<? extends K> c)` Adds all elements of the given collection to this collection.
`java.lang.Object`	`clone()`
`boolean`	`contains(java.lang.Object k)`
`ObjectListIterator<K>`	`iterator()` Returns a type-specific iterator on the elements of this collection.
`boolean`	`removeAll(java.util.Collection<?> c)` Remove from this collection all elements in the given collection.
`boolean`	`retainAll(java.util.Collection<?> c)` Retains in this collection only elements from the given collection.
`int`	`size()`

Methods inherited from class it.unimi.dsi.fastutil.objects.AbstractObjectSet
equals, hashCode

Methods inherited from class it.unimi.dsi.fastutil.objects.AbstractObjectCollection
containsAll, isEmpty, objectIterator, toArray, toArray, toString

Methods inherited from class java.util.AbstractCollection
clear, remove

Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface it.unimi.dsi.fastutil.objects.ObjectSet
remove

Methods inherited from interface it.unimi.dsi.fastutil.objects.ObjectCollection
objectIterator, toArray

Methods inherited from interface java.util.Set
clear, containsAll, isEmpty, spliterator, toArray, toArray

Methods inherited from interface java.util.Collection
parallelStream, removeIf, stream

Methods inherited from interface java.lang.Iterable
forEach

- Method Detail
  - add
```
public boolean add(K k)
```
    Specified by:
    
    add in interface java.util.Collection<K>
    
    Specified by:
    
    add in interface java.util.Set<K>
    
    Overrides:
    
    add in class AbstractObjectCollection<K>
  - contains
```
public boolean contains(java.lang.Object k)
```
    Specified by:
    
    contains in interface java.util.Collection<K>
    
    Specified by:
    
    contains in interface java.util.Set<K>
    
    Overrides:
    
    contains in class java.util.AbstractCollection<K>
  - addAll
```
public boolean addAll(java.util.Collection<? extends K> c)
```
    Description copied from class: AbstractObjectCollection
    
    Adds all elements of the given collection to this collection.
    
    Specified by:
    
    addAll in interface java.util.Collection<K>
    
    Specified by:
    
    addAll in interface java.util.Set<K>
    
    Overrides:
    
    addAll in class AbstractObjectCollection<K>
    
    Parameters:
    
    c - a collection.
    
    Returns:
    
    true if this collection changed as a result of the call.
  - removeAll
```
public boolean removeAll(java.util.Collection<?> c)
```
    Description copied from class: AbstractObjectCollection
    
    Remove from this collection all elements in the given collection. If the collection is an instance of this class, it uses faster iterators.
    
    Specified by:
    
    removeAll in interface java.util.Collection<K>
    
    Specified by:
    
    removeAll in interface java.util.Set<K>
    
    Overrides:
    
    removeAll in class AbstractObjectCollection<K>
    
    Parameters:
    
    c - a collection.
    
    Returns:
    
    true if this collection changed as a result of the call.
  - retainAll
```
public boolean retainAll(java.util.Collection<?> c)
```
    Description copied from class: AbstractObjectCollection
    
    Retains in this collection only elements from the given collection.
    
    Specified by:
    
    retainAll in interface java.util.Collection<K>
    
    Specified by:
    
    retainAll in interface java.util.Set<K>
    
    Overrides:
    
    retainAll in class AbstractObjectCollection<K>
    
    Parameters:
    
    c - a collection.
    
    Returns:
    
    true if this collection changed as a result of the call.
  - iterator
```
public ObjectListIterator<K> iterator()
```
    Description copied from interface: ObjectCollection
    
    Returns a type-specific iterator on the elements of this collection.
    Note that this specification strengthens the one given in Iterable.iterator(), which was already strengthened in the corresponding type-specific class, but was weakened by the fact that this interface extends Collection.
    
    Specified by:
    
    iterator in interface ObjectCollection<K>
    
    Specified by:
    
    iterator in interface ObjectIterable<K>
    
    Specified by:
    
    iterator in interface ObjectSet<K>
    
    Specified by:
    
    iterator in interface java.lang.Iterable<K>
    
    Specified by:
    
    iterator in interface java.util.Collection<K>
    
    Specified by:
    
    iterator in interface java.util.Set<K>
    
    Specified by:
    
    iterator in class AbstractObjectSet<K>
    
    Returns:
    
    a type-specific iterator on the elements of this collection.
  - size
```
public int size()
```
    Specified by:
    
    size in interface java.util.Collection<K>
    
    Specified by:
    
    size in interface java.util.Set<K>
    
    Specified by:
    
    size in class java.util.AbstractCollection<K>
  - clone
```
public java.lang.Object clone()
```
    Overrides:
    
    clone in class java.lang.Object

Class ObjectSets.Singleton<K>

Method Summary

Methods inherited from class it.unimi.dsi.fastutil.objects.AbstractObjectSet

Methods inherited from class it.unimi.dsi.fastutil.objects.AbstractObjectCollection

Methods inherited from class java.util.AbstractCollection

Methods inherited from class java.lang.Object

Methods inherited from interface it.unimi.dsi.fastutil.objects.ObjectSet

Methods inherited from interface it.unimi.dsi.fastutil.objects.ObjectCollection

Methods inherited from interface java.util.Set

Methods inherited from interface java.util.Collection

Methods inherited from interface java.lang.Iterable

Method Detail

add

contains

addAll

removeAll

retainAll

iterator

size

clone