it.unimi.dsi.fastutil.objects

Class AbstractObjectCollection<K>

java.lang.Object

java.util.AbstractCollection<K>

it.unimi.dsi.fastutil.objects.AbstractObjectCollection<K>

All Implemented Interfaces:

ObjectCollection<K>, ObjectIterable<K>, java.lang.Iterable<K>, java.util.Collection<K>

Direct Known Subclasses:

AbstractObjectList, AbstractObjectSet

public abstract class AbstractObjectCollection<K>
extends java.util.AbstractCollection<K>
implements ObjectCollection<K>

An abstract class providing basic methods for collections implementing a type-specific interface.

In particular, this class provide iterator(), add(), AbstractCollection.remove(Object) and AbstractCollection.contains(Object) methods that just call the type-specific counterpart.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractObjectCollection()

Method Summary

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.
boolean	containsAll(java.util.Collection<?> c) Checks whether this collection contains all elements from the given collection.
boolean	isEmpty()
abstract ObjectIterator<K>	iterator() Returns a type-specific iterator on the elements of this collection.
ObjectIterator<K>	objectIterator() Deprecated.
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.
java.lang.Object[]	toArray()
<T> T[]	toArray(T[] a) Returns an containing the items of this collection; the runtime type of the returned array is that of the specified array.
java.lang.String	toString()

Methods inherited from class java.util.AbstractCollection

clear, contains, remove, size

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Collection

clear, contains, equals, hashCode, parallelStream, remove, removeIf, size, spliterator, stream

Methods inherited from interface java.lang.Iterable

forEach

Constructor Detail

AbstractObjectCollection

protected AbstractObjectCollection()

Method Detail

toArray

public java.lang.Object[] toArray()

Specified by:

toArray in interface java.util.Collection<K>

Overrides:

toArray in class java.util.AbstractCollection<K>

toArray

public <T> T[] toArray(T[] a)

Description copied from interface: ObjectCollection

Returns an containing the items of this collection; the runtime type of the returned array is that of the specified array.

Warning: Note that, contrarily to Collection.toArray(Object[]), this methods just writes all elements of this collection: no special value will be added after the last one.

Specified by:

toArray in interface ObjectCollection<K>

Specified by:

toArray in interface java.util.Collection<K>

Overrides:

toArray in class java.util.AbstractCollection<K>

Parameters:

a - if this array is big enough, it will be used to store this collection.

Returns:

a primitive type array containing the items of this collection.

See Also:

Collection.toArray(Object[])

addAll

public boolean addAll(java.util.Collection<? extends K> c)

Adds all elements of the given collection to this collection.

Specified by:

addAll in interface java.util.Collection<K>

Overrides:

addAll in class java.util.AbstractCollection<K>

Parameters:

c - a collection.

Returns:

true if this collection changed as a result of the call.

add

public boolean add(K k)

Specified by:

add in interface java.util.Collection<K>

Overrides:

add in class java.util.AbstractCollection<K>

objectIterator

@Deprecated
public ObjectIterator<K> objectIterator()

Deprecated.

Delegates to the new covariantly stronger generic method.

Specified by:

objectIterator in interface ObjectCollection<K>

See Also:

ObjectCollection.iterator()

iterator

public abstract ObjectIterator<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 java.lang.Iterable<K>

Specified by:

iterator in interface java.util.Collection<K>

Specified by:

iterator in class java.util.AbstractCollection<K>

Returns:

a type-specific iterator on the elements of this collection.

containsAll

public boolean containsAll(java.util.Collection<?> c)

Checks whether this collection contains all elements from the given collection.

Specified by:

containsAll in interface java.util.Collection<K>

Overrides:

containsAll in class java.util.AbstractCollection<K>

Parameters:

c - a collection.

Returns:

true if this collection contains all elements of the argument.

retainAll

public boolean retainAll(java.util.Collection<?> c)

Retains in this collection only elements from the given collection.

Specified by:

retainAll in interface java.util.Collection<K>

Overrides:

retainAll in class java.util.AbstractCollection<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)

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>

Overrides:

removeAll in class java.util.AbstractCollection<K>

Parameters:

c - a collection.

Returns:

true if this collection changed as a result of the call.

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface java.util.Collection<K>

Overrides:

isEmpty in class java.util.AbstractCollection<K>

toString

public java.lang.String toString()

Overrides:

toString in class java.util.AbstractCollection<K>