ReferenceSets.EmptySet (fastutil 8.2.3)

java.lang.Object
- java.util.AbstractCollection<K>
- - it.unimi.dsi.fastutil.objects.AbstractReferenceCollection<K>
  - - it.unimi.dsi.fastutil.objects.ReferenceCollections.EmptyCollection<K>
    - - it.unimi.dsi.fastutil.objects.ReferenceSets.EmptySet<K>

All Implemented Interfaces:

ObjectIterable<K>, ReferenceCollection<K>, ReferenceSet<K>, Serializable, Cloneable, Iterable<K>, Collection<K>, Set<K>

Direct Known Subclasses:

ReferenceSortedSets.EmptySet

Enclosing class:

ReferenceSets
```
public static class ReferenceSets.EmptySet<K>
extends ReferenceCollections.EmptyCollection<K>
implements ReferenceSet<K>, Serializable, Cloneable
```
An immutable class representing the empty set and implementing a type-specific set interface.
This class may be useful to implement your own in case you subclass a type-specific set.

See Also:

Serialized Form

- Method Summary
  
  Modifier and Type Method Description
  
  Object clone()
  
  boolean equals(Object o)
  
  boolean remove(Object ok)
  - Methods inherited from class it.unimi.dsi.fastutil.objects.ReferenceCollections.EmptyCollection
    addAll, clear, contains, hashCode, iterator, removeAll, retainAll, size, toArray
  - Methods inherited from class it.unimi.dsi.fastutil.objects.AbstractReferenceCollection
    toString
  - Methods inherited from class java.util.AbstractCollection
    add, 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 it.unimi.dsi.fastutil.objects.ReferenceSet
    iterator
  - Methods inherited from interface java.util.Set
    add, addAll, clear, contains, containsAll, hashCode, isEmpty, removeAll, retainAll, size, spliterator, toArray, toArray

- Method Detail
  - remove
```
public boolean remove(Object ok)
```
    Specified by:
    
    remove in interface Collection<K>
    
    Specified by:
    
    remove in interface Set<K>
    
    Overrides:
    
    remove in class AbstractCollection<K>
  - clone
```
public Object clone()
```
  - equals
```
public boolean equals(Object o)
```
    Specified by:
    
    equals in interface Collection<K>
    
    Specified by:
    
    equals in interface Set<K>
    
    Overrides:
    
    equals in class ReferenceCollections.EmptyCollection<K>