Package org.apache.commons.collections4.collection

This package contains implementations of the Collection interface.

The following implementations are provided in the package:

• CompositeCollection - a collection that combines multiple collections into one

The following decorators are provided in the package:

• Synchronized - synchronizes method access for multi-threaded environments
• Unmodifiable - ensures the collection cannot be altered
• Predicated - ensures that only elements that are valid according to a predicate can be added
• Transformed - transforms elements as they are added
• Indexed - provides a map-like view onto another collection

Interface Summary

Interface	Description
CompositeCollection.CollectionMutator<E>	Pluggable strategy to handle changes to the composite.

Class Summary

Class	Description
AbstractCollectionDecorator<E>	Decorates another Collection to provide additional behaviour.
CompositeCollection<E>	Decorates a collection of other collections to provide a single unified view.
IndexedCollection<K,C>	An IndexedCollection is a Map-like view onto a Collection.
PredicatedCollection<E>	Decorates another Collection to validate that additions match a specified predicate.
PredicatedCollection.Builder<E>	Builder for creating predicated collections.
SynchronizedCollection<E>	Decorates another Collection to synchronize its behaviour for a multi-threaded environment.
TransformedCollection<E>	Decorates another Collection to transform objects that are added.
UnmodifiableBoundedCollection<E>	UnmodifiableBoundedCollection decorates another BoundedCollection to ensure it can't be altered.
UnmodifiableCollection<E>	Decorates another Collection to ensure it can't be altered.