Package org.apache.commons.collections4

This package contains the interfaces and utilities shared across all the subpackages of this component.

See:
          Description

Interface Summary
Bag<E> Defines a collection that counts the number of times an object appears in the collection.
BidiMap<K,V> Defines a map that allows bidirectional lookup between key and values.
BoundedCollection<E> Defines a collection that is bounded in size.
BoundedMap<K,V> Defines a map that is bounded in size.
Closure<T> Defines a functor interface implemented by classes that do something.
Factory<T> Defines a functor interface implemented by classes that create objects.
Get<K,V> The "read" subset of the Map interface.
IterableGet<K,V> The "read" subset of the Map interface.
IterableMap<K,V> Defines a map that can be iterated directly without needing to create an entry set.
IterableSortedMap<K,V> SortedMap + OrderedMap.
KeyValue<K,V> Defines a simple key value pair.
MapIterator<K,V> Defines an iterator that operates over a Map.
MultiMap<K,V> Defines a map that holds a collection of values against each key.
OrderedBidiMap<K,V> Defines a map that allows bidirectional lookup between key and values and retains and provides access to an ordering.
OrderedIterator<E> Defines an iterator that operates over an ordered container.
OrderedMap<K,V> Defines a map that maintains order and allows both forward and backward iteration through that order.
OrderedMapIterator<K,V> Defines an iterator that operates over an ordered Map.
Predicate<T> Defines a functor interface implemented by classes that perform a predicate test on an object.
Put<K,V> The "write" subset of the Map interface.
ResettableIterator<E> Defines an iterator that can be reset back to an initial state.
ResettableListIterator<E> Defines a list iterator that can be reset back to an initial state.
SortedBag<E> Defines a type of Bag that maintains a sorted order among its unique representative members.
SortedBidiMap<K,V> Defines a map that allows bidirectional lookup between key and values and retains both keys and values in sorted order.
Transformer<I,O> Defines a functor interface implemented by classes that transform one object into another.
Trie<K,V> Defines the interface for a prefix tree, an ordered tree data structure.
Unmodifiable Marker interface for collections, maps and iterators that are unmodifiable.
 

Class Summary
ArrayStack<E> Deprecated. use ArrayDeque instead (available from Java 1.6)
BagUtils Provides utility methods and decorators for Bag and SortedBag instances.
ClosureUtils ClosureUtils provides reference implementations and utilities for the Closure functor interface.
CollectionUtils Provides utility methods and decorators for Collection instances.
ComparatorUtils Provides convenient static utility methods for Comparator objects.
EnumerationUtils Provides utility methods for Enumeration instances.
FactoryUtils FactoryUtils provides reference implementations and utilities for the Factory functor interface.
IteratorUtils Provides static utility methods and decorators for Iterator instances.
ListUtils Provides utility methods and decorators for List instances.
MapUtils Provides utility methods and decorators for Map and SortedMap instances.
PredicateUtils PredicateUtils provides reference implementations and utilities for the Predicate functor interface.
QueueUtils Provides utility methods and decorators for Queue instances.
SetUtils Provides utility methods and decorators for Set and SortedSet instances.
SplitMapUtils Utilities for working with "split maps:" objects that implement Put and/or Get but not Map.
TransformerUtils TransformerUtils provides reference implementations and utilities for the Transformer functor interface.
TrieUtils A collection of Trie utilities.
 

Exception Summary
FunctorException Runtime exception thrown from functors.
 

Package org.apache.commons.collections4 Description

This package contains the interfaces and utilities shared across all the subpackages of this component.

The following collection implementations are provided in the package:

Version:
$Id: package-info.java 1469004 2013-04-17 17:37:03Z tn $


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