Package org.apache.commons.collections.keyvalue

This package contains implementations of collection and map related key/value classes.

Class Summary
AbstractKeyValue	Abstract pair class to assist with creating `KeyValue` and `java.util.Map.Entry Map.Entry` implementations.
AbstractMapEntry	Abstract Pair class to assist with creating correct `java.util.Map.Entry Map.Entry` implementations.
AbstractMapEntryDecorator	Provides a base decorator that allows additional functionality to be added to a `java.util.Map.Entry Map.Entry`.
DefaultKeyValue	A mutable `KeyValue` pair that does not implement `java.util.Map.Entry Map.Entry`.
DefaultMapEntry	A restricted implementation of java.util.Map.Entry that prevents the `Map.Entry` contract from being broken.
MultiKey	A `MultiKey` allows multiple map keys to be merged together.
TiedMapEntry	A `java.util.Map.Entry Map.Entry` tied to a map underneath.
UnmodifiableMapEntry	A `java.util.Map.Entry Map.Entry` that throws UnsupportedOperationException when `setValue` is called.

Package org.apache.commons.collections.keyvalue Description:

This package contains implementations of collection and map related key/value classes. These are usually used in maps, however they can be used as data holders in any collection.

The following key/value designs are included:

Map Entry - various map entry implementations
KeyValue - a key and value pair, without map entry semantics
MultiKey - a holder of multiple keys tied together