This package contains the interfaces and utilities shared across all the subpackages of this component.
The following collection implementations are provided in the package:
| Bag | Defines a collection that counts the number of times an object appears in the collection. |
| BidiMap | Defines a map that allows bidirectional lookup between key and values. |
| BoundedCollection | Defines a collection that is bounded in size. |
| BoundedMap | Defines a map that is bounded in size. |
| Buffer | Defines a collection that allows objects to be removed in some well-defined order. |
| Closure | Defines a functor interface implemented by classes that do something. |
| Factory | Defines a functor interface implemented by classes that create objects. |
| IterableMap | Defines a map that can be iterated directly without needing to create an entry set. |
| KeyValue | Defines a simple key value pair. |
| MapIterator | Defines an iterator that operates over a Map. |
| MultiMap | Defines a map that holds a collection of values against each key. |
| OrderedBidiMap | Defines a map that allows bidirectional lookup between key and values and retains and provides access to an ordering. |
| OrderedIterator | Defines an iterator that operates over an ordered collection. |
| OrderedMap | Defines a map that maintains order and allows both forward and backward iteration through that order. |
| OrderedMapIterator | Defines an iterator that operates over an ordered Map. |
| Predicate | Defines a functor interface implemented by classes that perform a predicate test on an object. |
| PriorityQueue | This interface is deprecated. Replaced by the Buffer interface and implementations in buffer subpackage. Due to be removed in v4.0. |
| ResettableIterator | Defines an iterator that can be reset back to an initial state. |
| ResettableListIterator | Defines a list iterator that can be reset back to an initial state. |
| SortedBag | Defines a type of Bag that maintains a sorted order among
its unique representative members. |
| SortedBidiMap | Defines a map that allows bidirectional lookup between key and values and retains both keys and values in sorted order. |
| Transformer | Defines a functor interface implemented by classes that transform one object into another. |
| Unmodifiable | Marker interface for collections, maps and iterators that are unmodifiable. |
| ArrayStack | An implementation of the java.util.Stack API that is based on an
ArrayList instead of a Vector, so it is not
synchronized to protect against multi-threaded access. |
| BagUtils | Provides utility methods and decorators for
Bag and SortedBag instances. |
| BeanMap | This class is deprecated. Identical class now available in commons-beanutils (full jar version). This version is due to be removed in collections v4.0. |
| BeanMap.MyMapEntry | Map entry used by BeanMap. |
| BinaryHeap | This class is deprecated. Replaced by PriorityBuffer in buffer subpackage. Due to be removed in v4.0. |
| BoundedFifoBuffer | This class is deprecated. Moved to buffer subpackage. Due to be removed in v4.0. |
| BufferUtils | Provides utility methods and decorators for Buffer 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. |
| CursorableLinkedList | This class is deprecated. Use new version in list subpackage, which has been rewritten and now returns the cursor from the listIterator method. Will be removed in v4.0 |
| CursorableLinkedList.Cursor | |
| DefaultMapBag | This class is deprecated. Moved to bag subpackage as AbstractMapBag. Due to be removed in v4.0. |
| DefaultMapEntry | This class is deprecated. Use the version in the keyvalue subpackage. Will be removed in v4.0 |
| DoubleOrderedMap | This class is deprecated. Replaced by TreeBidiMap in bidimap subpackage. Due to be removed in v4.0. |
| EnumerationUtils | Provides utility methods for Enumeration instances. |
| ExtendedProperties | This class extends normal Java properties by adding the possibility to use the same key many times concatenating the value strings instead of overwriting them. |
| FactoryUtils | FactoryUtils provides reference implementations and utilities
for the Factory functor interface. |
| FastArrayList | A customized implementation of |
| FastHashMap | A customized implementation of |
| FastTreeMap | A customized implementation of |
| HashBag | This class is deprecated. Moved to bag subpackage and rewritten internally. Due to be removed in v4.0. |
| IteratorUtils | Provides static utility methods and decorators for Iterator instances. |
| ListUtils | Provides utility methods and decorators for List instances. |
| LRUMap | This class is deprecated. Moved to map subpackage. Due to be removed in v4.0. |
| MapUtils | Provides utility methods and decorators for Map and SortedMap instances. |
| MultiHashMap | This class is deprecated. Class now available as MultiValueMap in map subpackage. This version is due to be removed in collections v4.0. |
| PredicateUtils | PredicateUtils provides reference implementations and utilities
for the Predicate functor interface. |
| ProxyMap | This class is deprecated. Moved to map subpackage as AbstractMapDecorator. It will be removed in v4.0. |
| ReferenceMap | This class is deprecated. Moved to map subpackage. Due to be removed in v4.0. |
| SequencedHashMap | This class is deprecated. Replaced by LinkedMap and ListOrderedMap in map subpackage. Due to be removed in v4.0. |
| SetUtils | Provides utility methods and decorators for Set and SortedSet instances. |
| StaticBucketMap | This class is deprecated. Moved to map subpackage. Due to be removed in v4.0. |
| SynchronizedPriorityQueue | This class is deprecated. PriorityQueue is replaced by the Buffer interface, see buffer subpackage. Due to be removed in v4.0. |
| TransformerUtils | TransformerUtils provides reference implementations and
utilities for the Transformer functor interface. |
| TreeBag | This class is deprecated. Moved to bag subpackage and rewritten internally. Due to be removed in v4.0. |
| UnboundedFifoBuffer | This class is deprecated. Moved to buffer subpackage. Due to be removed in v4.0. |
| BufferOverflowException | The BufferOverflowException is used when the buffer's capacity has been exceeded. |
| BufferUnderflowException | The BufferUnderflowException is used when the buffer is already empty. |
| FunctorException | Runtime exception thrown from functors. |