java.lang.Object
- java.util.AbstractCollection<K>
- - it.unimi.dsi.fastutil.objects.AbstractReferenceCollection<K>
  - - it.unimi.dsi.fastutil.objects.AbstractReferenceList<K>
    - - it.unimi.dsi.fastutil.objects.ReferenceLists.Singleton<K>

All Implemented Interfaces:

ObjectIterable<K>, ReferenceCollection<K>, ReferenceList<K>, Stack<K>, java.io.Serializable, java.lang.Cloneable, java.lang.Iterable<K>, java.util.Collection<K>, java.util.List<K>, java.util.RandomAccess

Enclosing class:

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

See Also:

Serialized Form

Nested Class Summary
- Nested classes/interfaces inherited from class it.unimi.dsi.fastutil.objects.AbstractReferenceList
  AbstractReferenceList.ReferenceSubList<K>

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`addAll(int i, java.util.Collection<? extends K> c)`	Adds all of the elements in the specified collection to this list (optional operation).
`boolean`	`addAll(java.util.Collection<? extends K> c)`
`void`	`clear()`
`java.lang.Object`	`clone()`
`boolean`	`contains(java.lang.Object k)`	Returns true if this list contains the specified element.
`K`	`get(int i)`
`ObjectListIterator<K>`	`iterator()`	Returns a type-specific iterator on the elements of this collection.
`ObjectListIterator<K>`	`listIterator()`	Returns a type-specific list iterator on the list.
`ObjectListIterator<K>`	`listIterator(int i)`	Returns a type-specific list iterator on the list starting at a given index.
`K`	`remove(int i)`
`boolean`	`remove(java.lang.Object k)`
`boolean`	`removeAll(java.util.Collection<?> c)`
`boolean`	`retainAll(java.util.Collection<?> c)`
`int`	`size()`
`void`	`size(int size)`	Sets the size of this list.
`ReferenceList<K>`	`subList(int from, int to)`	Returns a type-specific view of the portion of this list from the index `from`, inclusive, to the index `to`, exclusive.
`java.lang.Object[]`	`toArray()`

Methods inherited from class it.unimi.dsi.fastutil.objects.AbstractReferenceList
add, add, addElements, addElements, equals, getElements, hashCode, indexOf, lastIndexOf, peek, pop, push, removeElements, set, top, toString

Methods inherited from class java.util.AbstractCollection
containsAll, isEmpty, toArray

Methods inherited from class java.lang.Object
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.List
containsAll, isEmpty, replaceAll, sort, spliterator, toArray

Methods inherited from interface it.unimi.dsi.fastutil.Stack
isEmpty

- Method Detail
  - get
```
public K get(int i)
```
    Specified by:
    
    get in interface java.util.List<K>
  - remove
```
public boolean remove(java.lang.Object k)
```
    Specified by:
    
    remove in interface java.util.Collection<K>
    
    Specified by:
    
    remove in interface java.util.List<K>
    
    Overrides:
    
    remove in class java.util.AbstractCollection<K>
  - remove
```
public K remove(int i)
```
    Description copied from class: AbstractReferenceList
    
    This implementation always throws an UnsupportedOperationException.
    
    Specified by:
    
    remove in interface java.util.List<K>
    
    Overrides:
    
    remove in class AbstractReferenceList<K>
  - contains
```
public boolean contains(java.lang.Object k)
```
    Description copied from class: AbstractReferenceList
    
    Returns true if this list contains the specified element.
    This implementation delegates to indexOf().
    
    Specified by:
    
    contains in interface java.util.Collection<K>
    
    Specified by:
    
    contains in interface java.util.List<K>
    
    Overrides:
    
    contains in class AbstractReferenceList<K>
    
    See Also:
    
    List.contains(Object)
  - toArray
```
public java.lang.Object[] toArray()
```
    Specified by:
    
    toArray in interface java.util.Collection<K>
    
    Specified by:
    
    toArray in interface java.util.List<K>
    
    Overrides:
    
    toArray in class java.util.AbstractCollection<K>
  - listIterator
```
public ObjectListIterator<K> listIterator()
```
    Description copied from class: AbstractReferenceList
    
    Returns a type-specific list iterator on the list.
    This implementation delegates to listIterator(0).
    
    Specified by:
    
    listIterator in interface java.util.List<K>
    
    Specified by:
    
    listIterator in interface ReferenceList<K>
    
    Overrides:
    
    listIterator in class AbstractReferenceList<K>
    
    See Also:
    
    List.listIterator()
  - iterator
```
public ObjectListIterator<K> iterator()
```
    Description copied from class: AbstractReferenceList
    
    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.
    This implementation delegates to AbstractReferenceList.listIterator().
    
    Specified by:
    
    iterator in interface java.util.Collection<K>
    
    Specified by:
    
    iterator in interface java.lang.Iterable<K>
    
    Specified by:
    
    iterator in interface java.util.List<K>
    
    Specified by:
    
    iterator in interface ObjectIterable<K>
    
    Specified by:
    
    iterator in interface ReferenceCollection<K>
    
    Specified by:
    
    iterator in interface ReferenceList<K>
    
    Overrides:
    
    iterator in class AbstractReferenceList<K>
    
    Returns:
    
    a type-specific iterator on the elements of this collection.
    
    See Also:
    
    Iterable.iterator()
  - listIterator
```
public ObjectListIterator<K> listIterator(int i)
```
    Description copied from class: AbstractReferenceList
    
    Returns a type-specific list iterator on the list starting at a given index.
    This implementation is based on the random-access methods.
    
    Specified by:
    
    listIterator in interface java.util.List<K>
    
    Specified by:
    
    listIterator in interface ReferenceList<K>
    
    Overrides:
    
    listIterator in class AbstractReferenceList<K>
    
    See Also:
    
    List.listIterator(int)
  - subList
```
public ReferenceList<K> subList(int from,
                                int to)
```
    Description copied from interface: ReferenceList
    
    Returns a type-specific view of the portion of this list from the index from, inclusive, to the index to, exclusive.
    Note that this specification strengthens the one given in List.subList(int,int).
    
    Specified by:
    
    subList in interface java.util.List<K>
    
    Specified by:
    
    subList in interface ReferenceList<K>
    
    Overrides:
    
    subList in class AbstractReferenceList<K>
    
    See Also:
    
    List.subList(int,int)
  - addAll
```
public boolean addAll(int i,
                      java.util.Collection<? extends K> c)
```
    Description copied from class: AbstractReferenceList
    
    Adds all of the elements in the specified collection to this list (optional operation).
    
    Specified by:
    
    addAll in interface java.util.List<K>
    
    Overrides:
    
    addAll in class AbstractReferenceList<K>
  - addAll
```
public boolean addAll(java.util.Collection<? extends K> c)
```
    Description copied from class: AbstractReferenceList
    
    This implementation delegates to the type-specific version of List.addAll(int, Collection).
    
    Specified by:
    
    addAll in interface java.util.Collection<K>
    
    Specified by:
    
    addAll in interface java.util.List<K>
    
    Overrides:
    
    addAll in class AbstractReferenceList<K>
  - removeAll
```
public boolean removeAll(java.util.Collection<?> c)
```
    Specified by:
    
    removeAll in interface java.util.Collection<K>
    
    Specified by:
    
    removeAll in interface java.util.List<K>
    
    Overrides:
    
    removeAll in class java.util.AbstractCollection<K>
  - retainAll
```
public boolean retainAll(java.util.Collection<?> c)
```
    Specified by:
    
    retainAll in interface java.util.Collection<K>
    
    Specified by:
    
    retainAll in interface java.util.List<K>
    
    Overrides:
    
    retainAll in class java.util.AbstractCollection<K>
  - size
```
public int size()
```
    Specified by:
    
    size in interface java.util.Collection<K>
    
    Specified by:
    
    size in interface java.util.List<K>
    
    Specified by:
    
    size in class java.util.AbstractCollection<K>
  - size
```
public void size(int size)
```
    Description copied from interface: ReferenceList
    
    Sets the size of this list.
    If the specified size is smaller than the current size, the last elements are discarded. Otherwise, they are filled with 0/null/false.
    
    Specified by:
    
    size in interface ReferenceList<K>
    
    Overrides:
    
    size in class AbstractReferenceList<K>
    
    Parameters:
    
    size - the new size.
  - clear
```
public void clear()
```
    Description copied from class: AbstractReferenceList
    
    This implementation delegates to AbstractReferenceList.removeElements(int, int).
    
    Specified by:
    
    clear in interface java.util.Collection<K>
    
    Specified by:
    
    clear in interface java.util.List<K>
    
    Overrides:
    
    clear in class AbstractReferenceList<K>
  - clone
```
public java.lang.Object clone()
```

Class ReferenceLists.Singleton<K>

Nested Class Summary

Nested classes/interfaces inherited from class it.unimi.dsi.fastutil.objects.AbstractReferenceList

Method Summary

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

Methods inherited from class java.util.AbstractCollection

Methods inherited from class java.lang.Object

Methods inherited from interface java.util.Collection

Methods inherited from interface java.lang.Iterable

Methods inherited from interface java.util.List

Methods inherited from interface it.unimi.dsi.fastutil.Stack

Method Detail

get

remove

remove

contains

toArray

listIterator

iterator

listIterator

subList

addAll

addAll

removeAll

retainAll

size

size

clear

clone