Jakarta Commons Collections Package

Java Collections Framework extensions.

Jakarta-commons Collections

org.apache.commons.collections Java Collections Framework extensions.

Other Packages

org.apache.commons.collections.comparatorsContains concrete Comparator implementations.
org.apache.commons.collections.iteratorsContains concrete java.util.Iterator implementations and utilities.
Java Collections Framework extensions.

See also the java.util package.

CategoryClassesComments
List Implementations org.apache.commons.collections.CursorableLinkedList
org.apache.commons.collections.FastArrayList
Special-purpose implementations of the java.util.List interface.
Map Implementations org.apache.commons.collections.BeanMap
org.apache.commons.collections.DoubleOrderedMap
org.apache.commons.collections.ExtendedProperties
org.apache.commons.collections.FastHashMap
org.apache.commons.collections.FastTreeMap
org.apache.commons.collections.LRUMap
org.apache.commons.collections.MultiHashMap
org.apache.commons.collections.ProxyMap
org.apache.commons.collections.ReferenceMap
org.apache.commons.collections.SequencedHashMap
org.apache.commons.collections.SoftRefHashMap
org.apache.commons.collections.StaticBucketMap
Special-purpose implementations of the java.util.Map interface and associated classes.
Buffer Interface and Implementations org.apache.commons.collections.ArrayStack
org.apache.commons.collections.BinaryHeap
org.apache.commons.collections.BoundedFifoBuffer
org.apache.commons.collections.Buffer
org.apache.commons.collections.PriorityQueue
org.apache.commons.collections.SynchronizedPriorityQueue org.apache.commons.collections.UnboundedFifoBuffer
New collection interface that specifies a removal order for the collection, used to implement queues and queue-like things.
Bag Interface and Implementations org.apache.commons.collections.Bag
org.apache.commons.collections.DefaultMapBag
org.apache.commons.collections.HashBag
org.apache.commons.collections.SortedBag
org.apache.commons.collections.TreeBag
New collections interface that keeps a count of its members.
Utilities org.apache.commons.collections.BagUtils
org.apache.commons.collections.BufferUtils
org.apache.commons.collections.CollectionUtils
org.apache.commons.collections.ComparatorUtils
org.apache.commons.collections.ListUtils
org.apache.commons.collections.MapUtils
org.apache.commons.collections.SetUtils
Manipulate collection objects, determine set theoretic properties, ensure type-safety, provide decorators, etc.
Functor Interfaces org.apache.commons.collections.Factory
org.apache.commons.collections.Predicate
org.apache.commons.collections.Closure
org.apache.commons.collections.Transformer
Create views or functors on a collection. If your collection represents X, these allow you to define and look at f(X).
Miscellaneous org.apache.commons.collections.StringStack
org.apache.commons.collections.DefaultMapEntry
A stack of strings; and the trivial implementation of java.util.Map.Entry.

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