Apache Commons Collections 4.4 · org.apache.commons.collections4.multiset

This package contains implementations of the MultiSet interface. A multiset stores an object and a count of the number of occurrences of the object.

The following implementations are provided in the package:

HashMultiSet - implementation that uses a HashMap to store the data

The following decorators are provided in the package:

Predicated - ensures that only elements that are valid according to a predicate can be added
Synchronized - synchronizes method access for multi-threaded environments
Unmodifiable - ensures the multiset cannot be altered

Class Summary

Modifier and Type	Class and Description
public abstract class	AbstractMapMultiSet< the type held in the multiset E> Abstract implementation of the `MultiSet` interface to simplify the creation of subclass implementations.
public abstract class	AbstractMultiSet< the type held in the multiset E> Abstract implementation of the `MultiSet` interface to simplify the creation of subclass implementations.
public abstract class	AbstractMultiSetDecorator< the type held in the multiset E> Decorates another `MultSet` to provide additional behaviour.
public class	HashMultiSet< the type held in the multiset E> Implements `MultiSet`, using a `HashMap` to provide the data storage.
public class	PredicatedMultiSet< the type held in the multiset E> Decorates another `MultiSet` to validate that additions match a specified predicate.
public class	SynchronizedMultiSet< the type held in the multiset E> Decorates another `MultiSet` to synchronize its behaviour for a multi-threaded environment.
public class	UnmodifiableMultiSet< the type held in the multiset E> Decorates another `MultiSet` to ensure it can't be altered.

Package org.apache.commons.collections4.multiset

Class Summary