Class IntCollections.EmptyCollection
- java.lang.Object
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- java.util.AbstractCollection<java.lang.Integer>
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- it.unimi.dsi.fastutil.ints.AbstractIntCollection
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- it.unimi.dsi.fastutil.ints.IntCollections.EmptyCollection
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- All Implemented Interfaces:
IntCollection
,IntIterable
,java.lang.Iterable<java.lang.Integer>
,java.util.Collection<java.lang.Integer>
- Direct Known Subclasses:
IntBigLists.EmptyBigList
,IntLists.EmptyList
,IntSets.EmptySet
- Enclosing class:
- IntCollections
public abstract static class IntCollections.EmptyCollection extends AbstractIntCollection
An immutable class representing an empty type-specific collection.This class may be useful to implement your own in case you subclass a type-specific collection.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description boolean
addAll(IntCollection c)
Adds all elements of the given type-specific collection to this collection.boolean
addAll(java.util.Collection<? extends java.lang.Integer> c)
void
clear()
boolean
contains(int k)
Returnstrue
if this collection contains the specified element.boolean
equals(java.lang.Object o)
int
hashCode()
IntBidirectionalIterator
iterator()
Returns a type-specific iterator on the elements of this collection.boolean
removeAll(IntCollection c)
Remove from this collection all elements in the given type-specific collection.boolean
removeAll(java.util.Collection<?> c)
boolean
retainAll(IntCollection c)
Retains in this collection only elements from the given type-specific collection.boolean
retainAll(java.util.Collection<?> c)
int
size()
java.lang.Object[]
toArray()
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Methods inherited from class it.unimi.dsi.fastutil.ints.AbstractIntCollection
add, add, contains, containsAll, containsAll, rem, remove, toArray, toIntArray, toIntArray, toString
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Methods inherited from interface java.util.Collection
isEmpty, parallelStream, spliterator, stream, toArray, toArray
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Methods inherited from interface it.unimi.dsi.fastutil.ints.IntCollection
removeIf, removeIf
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Methods inherited from interface it.unimi.dsi.fastutil.ints.IntIterable
forEach, forEach
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Method Detail
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contains
public boolean contains(int k)
Description copied from class:AbstractIntCollection
Returnstrue
if this collection contains the specified element.This implementation iterates over the elements in the collection, looking for the specified element.
- Specified by:
contains
in interfaceIntCollection
- Overrides:
contains
in classAbstractIntCollection
- See Also:
Collection.contains(Object)
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toArray
public java.lang.Object[] toArray()
- Specified by:
toArray
in interfacejava.util.Collection<java.lang.Integer>
- Overrides:
toArray
in classjava.util.AbstractCollection<java.lang.Integer>
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iterator
public IntBidirectionalIterator iterator()
Description copied from interface:IntCollection
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 extendsCollection
.- Specified by:
iterator
in interfacejava.util.Collection<java.lang.Integer>
- Specified by:
iterator
in interfaceIntCollection
- Specified by:
iterator
in interfaceIntIterable
- Specified by:
iterator
in interfacejava.lang.Iterable<java.lang.Integer>
- Specified by:
iterator
in classAbstractIntCollection
- Returns:
- a type-specific iterator on the elements of this collection.
- See Also:
Iterable.iterator()
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size
public int size()
- Specified by:
size
in interfacejava.util.Collection<java.lang.Integer>
- Specified by:
size
in classjava.util.AbstractCollection<java.lang.Integer>
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clear
public void clear()
- Specified by:
clear
in interfacejava.util.Collection<java.lang.Integer>
- Overrides:
clear
in classjava.util.AbstractCollection<java.lang.Integer>
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hashCode
public int hashCode()
- Specified by:
hashCode
in interfacejava.util.Collection<java.lang.Integer>
- Overrides:
hashCode
in classjava.lang.Object
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equals
public boolean equals(java.lang.Object o)
- Specified by:
equals
in interfacejava.util.Collection<java.lang.Integer>
- Overrides:
equals
in classjava.lang.Object
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addAll
public boolean addAll(java.util.Collection<? extends java.lang.Integer> c)
Description copied from class:AbstractIntCollection
This implementation delegates to the type-specific version if given a type-specific collection, otherwise is uses the implementation from
AbstractCollection
.- Specified by:
addAll
in interfacejava.util.Collection<java.lang.Integer>
- Overrides:
addAll
in classAbstractIntCollection
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removeAll
public boolean removeAll(java.util.Collection<?> c)
Description copied from class:AbstractIntCollection
This implementation delegates to the type-specific version if given a type-specific collection, otherwise is uses the implementation from
AbstractCollection
.- Specified by:
removeAll
in interfacejava.util.Collection<java.lang.Integer>
- Overrides:
removeAll
in classAbstractIntCollection
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retainAll
public boolean retainAll(java.util.Collection<?> c)
Description copied from class:AbstractIntCollection
This implementation delegates to the type-specific version if given a type-specific collection, otherwise is uses the implementation from
AbstractCollection
.- Specified by:
retainAll
in interfacejava.util.Collection<java.lang.Integer>
- Overrides:
retainAll
in classAbstractIntCollection
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addAll
public boolean addAll(IntCollection c)
Description copied from interface:IntCollection
Adds all elements of the given type-specific collection to this collection.- Specified by:
addAll
in interfaceIntCollection
- Overrides:
addAll
in classAbstractIntCollection
- Parameters:
c
- a type-specific collection.- Returns:
true
if this collection changed as a result of the call.- See Also:
Collection.addAll(Collection)
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removeAll
public boolean removeAll(IntCollection c)
Description copied from interface:IntCollection
Remove from this collection all elements in the given type-specific collection.- Specified by:
removeAll
in interfaceIntCollection
- Overrides:
removeAll
in classAbstractIntCollection
- Parameters:
c
- a type-specific collection.- Returns:
true
if this collection changed as a result of the call.- See Also:
Collection.removeAll(Collection)
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retainAll
public boolean retainAll(IntCollection c)
Description copied from interface:IntCollection
Retains in this collection only elements from the given type-specific collection.- Specified by:
retainAll
in interfaceIntCollection
- Overrides:
retainAll
in classAbstractIntCollection
- Parameters:
c
- a type-specific collection.- Returns:
true
if this collection changed as a result of the call.- See Also:
Collection.retainAll(Collection)
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