Package org.apache.commons.collections.bag
This package contains implementations of the
Bag and
SortedBag interfaces.
| AbstractBagDecorator | Decorates another Bag to provide additional behaviour. |
| AbstractMapBag | Abstract implementation of the Bag interface to simplify the creation
of subclass implementations. |
| AbstractMapBag.MutableInteger | Mutable integer class for storing the data. |
| AbstractSortedBagDecorator | Decorates another SortedBag to provide additional behaviour. |
| HashBag | Implements Bag, using a HashMap to provide the
data storage. |
| PredicatedBag | Decorates another Bag to validate that additions
match a specified predicate. |
| PredicatedSortedBag | Decorates another SortedBag to validate that additions
match a specified predicate. |
| SynchronizedBag | Decorates another Bag to synchronize its behaviour
for a multi-threaded environment. |
| SynchronizedSortedBag | Decorates another SortedBag to synchronize its behaviour
for a multi-threaded environment. |
| TransformedBag | Decorates another Bag to transform objects that are added. |
| TransformedSortedBag | Decorates another SortedBag to transform objects that are added. |
| TreeBag | Implements SortedBag, using a TreeMap to provide
the data storage. |
| TypedBag | Decorates another Bag to validate that elements added
are of a specific type. |
| TypedSortedBag | Decorates another SortedBag to validate that elements added
are of a specific type. |
| UnmodifiableBag | Decorates another Bag to ensure it can't be altered. |
| UnmodifiableSortedBag | Decorates another SortedBag to ensure it can't be altered. |
This package contains implementations of the
Bag and
SortedBag interfaces.
A bag stores an object and a count of the number of occurences of the object.
The following implementations are provided in the package:
- HashBag - implementation that uses a HashMap to store the data
- TreeBag - implementation that uses a TreeMap to store the data
The following decorators are provided in the package:
- Synchronized - synchronizes method access for multi-threaded environments
- Unmodifiable - ensures the bag cannot be altered
- Predicated - ensures that only elements that are valid according to a predicate can be added
- Typed - ensures that only elements that are of a specific type can be added
- Transformed - transforms each element added to the bag
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