Package com.globalmentor.collections

Class CollectionDecorator<E>

java.lang.Object

com.globalmentor.collections.CollectionDecorator<E>

Type Parameters:

E - The type of element contained in the collection.

All Implemented Interfaces:

Iterable<E>, Collection<E>

Direct Known Subclasses:

AbstractConverterCollection, ListDecorator

public class CollectionDecorator<E>
extends Object
implements Collection<E>

A collection that wraps an existing collection, providing access through the Collection interface.

Author:

Garret Wilson

Field Summary

Fields

Modifier and Type	Field	Description
protected final Collection<E>	collection	The collection this class decorates.

Constructor Summary

Constructors

Constructor	Description
CollectionDecorator(Collection<E> collection)	Collection constructor.

Method Summary

Modifier and Type	Method	Description
boolean	add(E o)
boolean	addAll(Collection<? extends E> c)
void	clear()
boolean	contains(Object o)
boolean	containsAll(Collection<?> c)
boolean	equals(Object o)
int	hashCode()
boolean	isEmpty()
Iterator<E>	iterator()
Stream<E>	parallelStream()
boolean	remove(Object o)
boolean	removeAll(Collection<?> c)
boolean	removeIf(Predicate<? super E> filter)
boolean	retainAll(Collection<?> c)
int	size()
Spliterator<E>	spliterator()
Stream<E>	stream()
Object[]	toArray()
<T> T[]	toArray(T[] a)

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.lang.Iterable

forEach

Field Details

collection

protected final Collection<E> collection

The collection this class decorates.

Constructor Details

CollectionDecorator

public CollectionDecorator(Collection<E> collection)

Collection constructor.

Parameters:

collection - The collection this collection should decorate.

Throws:

NullPointerException - if the provided collection is null.

Method Details

size

public int size()

Specified by:

size in interface Collection<E>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Collection<E>

contains

public boolean contains(Object o)

Specified by:

contains in interface Collection<E>

iterator

public Iterator<E> iterator()

Specified by:

iterator in interface Collection<E>

Specified by:

iterator in interface Iterable<E>

toArray

public Object[] toArray()

Specified by:

toArray in interface Collection<E>

toArray

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

Specified by:

toArray in interface Collection<E>

add

public boolean add(E o)

Specified by:

add in interface Collection<E>

remove

public boolean remove(Object o)

Specified by:

remove in interface Collection<E>

containsAll

public boolean containsAll(Collection<?> c)

Specified by:

containsAll in interface Collection<E>

addAll

public boolean addAll(Collection<? extends E> c)

Specified by:

addAll in interface Collection<E>

removeAll

public boolean removeAll(Collection<?> c)

Specified by:

removeAll in interface Collection<E>

removeIf

public boolean removeIf(Predicate<? super E> filter)

Specified by:

removeIf in interface Collection<E>

retainAll

public boolean retainAll(Collection<?> c)

Specified by:

retainAll in interface Collection<E>

clear

public void clear()

Specified by:

clear in interface Collection<E>

equals

public boolean equals(Object o)

Specified by:

equals in interface Collection<E>

Overrides:

equals in class Object

hashCode

public int hashCode()

Specified by:

hashCode in interface Collection<E>

Overrides:

hashCode in class Object

spliterator

public Spliterator<E> spliterator()

Specified by:

spliterator in interface Collection<E>

Specified by:

spliterator in interface Iterable<E>

stream

public Stream<E> stream()

Specified by:

stream in interface Collection<E>

parallelStream

public Stream<E> parallelStream()

Specified by:

parallelStream in interface Collection<E>