## Uses of Interface
org.apache.commons.collections4.Factory

- Packages that use Factory
  Package | Description
  --- | ---
  org.apache.commons.collections4 | This package contains the interfaces and utilities shared across all the subpackages of this component.
  org.apache.commons.collections4.functors | This package contains implementations of the `Closure`, `Predicate`, `Transformer` and `Factory` interfaces.
  org.apache.commons.collections4.list | This package contains implementations of the `List` interface.
  org.apache.commons.collections4.map | This package contains implementations of the `Map`, `IterableMap`, `OrderedMap` and `SortedMap` interfaces.

- - ### Uses of Factory in org.apache.commons.collections4

    Methods in org.apache.commons.collections4 that return Factory
    Modifier and Type | Method and Description
    --- | ---
    `static <T> Factory<T>` | FactoryUtils.`constantFactory(T constantToReturn)` Creates a Factory that will return the same object each time the factory is used.
    `static <T> Factory<T>` | FactoryUtils.`exceptionFactory()` Gets a Factory that always throws an exception.
    `static <T> Factory<T>` | FactoryUtils.`instantiateFactory(Class<T> classToInstantiate)` Creates a Factory that can create objects of a specific type using a no-args constructor.
    `static <T> Factory<T>` | FactoryUtils.`instantiateFactory(Class<T> classToInstantiate, Class<?>[] paramTypes, Object[] args)` Creates a Factory that can create objects of a specific type using the arguments specified to this method.
    `static <T> Factory<T>` | FactoryUtils.`nullFactory()` Gets a Factory that will return null each time the factory is used.
    `static <T> Factory<T>` | FactoryUtils.`prototypeFactory(T prototype)` Creates a Factory that will return a clone of the same prototype object each time the factory is used.

    Methods in org.apache.commons.collections4 with parameters of type Factory
    Modifier and Type | Method and Description
    --- | ---
    `static <I,O> Transformer<I,O>` | TransformerUtils.`asTransformer(Factory<? extends O> factory)` Creates a Transformer that calls a Factory each time the transformer is used.
    `static <E> List<E>` | ListUtils.`lazyList(List<E> list, Factory<? extends E> factory)` Returns a "lazy" list whose elements will be created on demand.
    `static <K,V> IterableMap<K,V>` | MapUtils.`lazyMap(Map<K,V> map, Factory<? extends V> factory)` Returns a "lazy" map whose values will be created on demand.
    `static <K,V> SortedMap<K,V>` | MapUtils.`lazySortedMap(SortedMap<K,V> map, Factory<? extends V> factory)` Returns a "lazy" sorted map whose values will be created on demand.
    `static <K,V,C extends Collection<V>> MultiValueMap<K,V>` | MapUtils.`multiValueMap(Map<K,C> map, Factory<C> collectionFactory)` Deprecated. since 4.1, use `MultiValuedMap` instead
    `static <O,R extends Collection<O>> List<R>` | IterableUtils.`partition(Iterable<? extends O> iterable, Factory<R> partitionFactory, Predicate<? super O>... predicates)` Partitions all elements from iterable into separate output collections, based on the evaluation of the given predicates.

  - ### Uses of Factory in org.apache.commons.collections4.functors

    Classes in org.apache.commons.collections4.functors that implement Factory
    Modifier and Type | Class and Description
    --- | ---
    `class` | `ConstantFactory<T>` Factory implementation that returns the same constant each time.
    `class` | `ExceptionFactory<T>` Factory implementation that always throws an exception.
    `class` | `InstantiateFactory<T>` Factory implementation that creates a new object instance by reflection.

    Fields in org.apache.commons.collections4.functors declared as Factory
    Modifier and Type | Field and Description
    --- | ---
    `static Factory` | ExceptionFactory.`INSTANCE` Singleton predicate instance
    `static Factory` | ConstantFactory.`NULL_INSTANCE` Returns null each time

    Methods in org.apache.commons.collections4.functors that return Factory
    Modifier and Type | Method and Description
    --- | ---
    `static <T> Factory<T>` | ConstantFactory.`constantFactory(T constantToReturn)` Factory method that performs validation.
    `static <T> Factory<T>` | ExceptionFactory.`exceptionFactory()` Factory returning the singleton instance.
    `Factory<? extends O>` | FactoryTransformer.`getFactory()` Gets the factory.
    `static <T> Factory<T>` | InstantiateFactory.`instantiateFactory(Class<T> classToInstantiate, Class<?>[] paramTypes, Object[] args)` Factory method that performs validation.
    `static <T> Factory<T>` | PrototypeFactory.`prototypeFactory(T prototype)` Factory method that performs validation.

    Methods in org.apache.commons.collections4.functors with parameters of type Factory
    Modifier and Type | Method and Description
    --- | ---
    `static <I,O> Transformer<I,O>` | FactoryTransformer.`factoryTransformer(Factory<? extends O> factory)` Factory method that performs validation.

    Constructors in org.apache.commons.collections4.functors with parameters of type Factory
    Constructor and Description
    `FactoryTransformer(Factory<? extends O> factory)` Constructor that performs no validation.

  - ### Uses of Factory in org.apache.commons.collections4.list

    Methods in org.apache.commons.collections4.list with parameters of type Factory
    Modifier and Type | Method and Description
    --- | ---
    `static <E> LazyList<E>` | LazyList.`lazyList(List<E> list, Factory<? extends E> factory)` Factory method to create a lazily instantiating list.

    Constructors in org.apache.commons.collections4.list with parameters of type Factory
    Constructor and Description
    `LazyList(List<E> list, Factory<? extends E> factory)` Constructor that wraps (not copies).

  - ### Uses of Factory in org.apache.commons.collections4.map

    Methods in org.apache.commons.collections4.map with parameters of type Factory
    Modifier and Type | Method and Description
    --- | ---
    `static <K,V> DefaultedMap<K,V>` | DefaultedMap.`defaultedMap(Map<K,V> map, Factory<? extends V> factory)` Factory method to create a defaulting map.
    `static <K,V> LazyMap<K,V>` | LazyMap.`lazyMap(Map<K,V> map, Factory<? extends V> factory)` Factory method to create a lazily instantiated map.
    `static <K,V> LazySortedMap<K,V>` | LazySortedMap.`lazySortedMap(SortedMap<K,V> map, Factory<? extends V> factory)` Factory method to create a lazily instantiated sorted map.
    `static <K,V,C extends Collection<V>> MultiValueMap<K,V>` | MultiValueMap.`multiValueMap(Map<K,? super C> map, Factory<C> collectionFactory)` Deprecated. Creates a map which decorates the given `map` and creates the value collections using the supplied `collectionFactory`.

    Constructors in org.apache.commons.collections4.map with parameters of type Factory
    Constructor and Description
    `LazyMap(Map<K,V> map, Factory<? extends V> factory)` Constructor that wraps (not copies).
    `LazySortedMap(SortedMap<K,V> map, Factory<? extends V> factory)` Constructor that wraps (not copies).
    `MultiValueMap(Map<K,? super C> map, Factory<C> collectionFactory)` Deprecated. Creates a MultiValueMap which decorates the given `map` and creates the value collections using the supplied `collectionFactory`.

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