net.dongliu.commons.collection

接口 ExStream<T>

所有超级接口:

AutoCloseable, java.util.stream.BaseStream<T,java.util.stream.Stream<T>>, java.util.stream.Stream<T>

public interface ExStream<T>
extends java.util.stream.Stream<T>

Expanded stream with toList(), toSet() and other reduce method.

作者:

Liu Dong

嵌套类概要

从接口继承的嵌套类/接口 java.util.stream.Stream

java.util.stream.Stream.Builder<T>

方法概要

限定符和类型	方法和说明
ExStream<T>	distinct()
ExStream<T>	filter(java.util.function.Predicate<? super T> predicate)
<R> ExStream<R>	flatMap(java.util.function.Function<? super T,? extends java.util.stream.Stream<? extends R>> mapper)
ExDoubleStream	flatMapToDouble(java.util.function.Function<? super T,? extends java.util.stream.DoubleStream> mapper)
ExIntStream	flatMapToInt(java.util.function.Function<? super T,? extends java.util.stream.IntStream> mapper)
ExLongStream	flatMapToLong(java.util.function.Function<? super T,? extends java.util.stream.LongStream> mapper)
default String	join() join list items to string
default String	join(CharSequence delimiter) join list items with delimiter to string
default String	join(CharSequence delimiter, CharSequence prefix, CharSequence suffix) join list items with delimiter, prefix, suffix to string
ExStream<T>	limit(long maxSize)
<R> ExStream<R>	map(java.util.function.Function<? super T,? extends R> mapper)
ExDoubleStream	mapToDouble(java.util.function.ToDoubleFunction<? super T> mapper)
ExIntStream	mapToInt(java.util.function.ToIntFunction<? super T> mapper)
ExLongStream	mapToLong(java.util.function.ToLongFunction<? super T> mapper)
ExStream<T>	onClose(Runnable closeHandler)
ExStream<T>	parallel()
ExStream<T>	peek(java.util.function.Consumer<? super T> action)
ExStream<T>	sequential()
ExStream<T>	skip(long n)
ExStream<T>	sorted()
ExStream<T>	sorted(Comparator<? super T> comparator)
default ExArrayList<T>	toArrayList() Collect items to array list
default <K,U> ConcurrentMap<K,U>	toConcurrentMap(java.util.function.Function<? super T,? extends K> keyMapper, java.util.function.Function<? super T,? extends U> valueMapper) Returns a concurrent Collector that accumulates elements into a ConcurrentMap whose keys and values are the result of applying the provided mapping functions to the input elements.
default <K,U> ConcurrentMap<K,U>	toConcurrentMap(java.util.function.Function<? super T,? extends K> keyMapper, java.util.function.Function<? super T,? extends U> valueMapper, java.util.function.BinaryOperator<U> merger) Returns a concurrent Collector that accumulates elements into a ConcurrentMap whose keys and values are the result of applying the provided mapping functions to the input elements.
default <K,U> ExHashMap<K,U>	toHashMap(java.util.function.Function<? super T,? extends K> keyMapper, java.util.function.Function<? super T,? extends U> valueMapper) Collect item to a hash map.
default <K,U> ExHashMap<K,U>	toHashMap(java.util.function.Function<? super T,? extends K> keyMapper, java.util.function.Function<? super T,? extends U> valueMapper, java.util.function.BinaryOperator<U> merger) Collect item to a hash map.
default ExHashSet<T>	toHashSet() Collect item to a hash set
default <K,U> ExLinkedHashMap<K,U>	toLinkedHashMap(java.util.function.Function<? super T,? extends K> keyMapper, java.util.function.Function<? super T,? extends U> valueMapper) Collect item to a linked hash map.
default <K,U> ExLinkedHashMap<K,U>	toLinkedHashMap(java.util.function.Function<? super T,? extends K> keyMapper, java.util.function.Function<? super T,? extends U> valueMapper, java.util.function.BinaryOperator<U> merger) Collect item to a linked hash map.
default ExLinkedHashSet<T>	toLinkedHashSet() Collect item to a linked hash set
default ExArrayList<T>	toLinkedList() Collect items to linked list
default ExList<T>	toList() Collect items to a list
default <K,U> ExMap<K,U>	toMap(java.util.function.Function<? super T,? extends K> keyMapper, java.util.function.Function<? super T,? extends U> valueMapper) Collect item to a map.
default <K,U> ExMap<K,U>	toMap(java.util.function.Function<? super T,? extends K> keyMapper, java.util.function.Function<? super T,? extends U> valueMapper, java.util.function.BinaryOperator<U> merger) Collect item to a map.
default ExSet<T>	toSet() Collect item to a set
default <K,U> ExTreeMap<K,U>	toTreeMap(java.util.function.Function<? super T,? extends K> keyMapper, java.util.function.Function<? super T,? extends U> valueMapper) Collect item to a tree map.
default <K,U> ExTreeMap<K,U>	toTreeMap(java.util.function.Function<? super T,? extends K> keyMapper, java.util.function.Function<? super T,? extends U> valueMapper, java.util.function.BinaryOperator<U> merger) Collect item to a tree map.
default ExTreeSet<T>	toTreeSet() Collect item to a linked hash set
ExStream<T>	unordered()
static <T> ExStream<T>	wrap(java.util.stream.Stream<T> stream)
static <T> ExStream<T>	wrap(T... stream) Create stream from array or multi values

从接口继承的方法 java.util.stream.Stream

allMatch, anyMatch, builder, collect, collect, concat, count, empty, findAny, findFirst, forEach, forEachOrdered, generate, iterate, max, min, noneMatch, of, of, reduce, reduce, reduce, toArray, toArray

从接口继承的方法 java.util.stream.BaseStream

close, isParallel, iterator, spliterator

方法详细资料

wrap

static <T> ExStream<T> wrap(java.util.stream.Stream<T> stream)

wrap

@SafeVarargs
static <T> ExStream<T> wrap(T... stream)

Create stream from array or multi values

filter

ExStream<T> filter(java.util.function.Predicate<? super T> predicate)

指定者:

filter 在接口中 java.util.stream.Stream<T>

map

<R> ExStream<R> map(java.util.function.Function<? super T,? extends R> mapper)

指定者:

map 在接口中 java.util.stream.Stream<T>

mapToInt

ExIntStream mapToInt(java.util.function.ToIntFunction<? super T> mapper)

指定者:

mapToInt 在接口中 java.util.stream.Stream<T>

mapToLong

ExLongStream mapToLong(java.util.function.ToLongFunction<? super T> mapper)

指定者:

mapToLong 在接口中 java.util.stream.Stream<T>

mapToDouble

ExDoubleStream mapToDouble(java.util.function.ToDoubleFunction<? super T> mapper)

指定者:

mapToDouble 在接口中 java.util.stream.Stream<T>

flatMap

<R> ExStream<R> flatMap(java.util.function.Function<? super T,? extends java.util.stream.Stream<? extends R>> mapper)

指定者:

flatMap 在接口中 java.util.stream.Stream<T>

flatMapToInt

ExIntStream flatMapToInt(java.util.function.Function<? super T,? extends java.util.stream.IntStream> mapper)

指定者:

flatMapToInt 在接口中 java.util.stream.Stream<T>

flatMapToLong

ExLongStream flatMapToLong(java.util.function.Function<? super T,? extends java.util.stream.LongStream> mapper)

指定者:

flatMapToLong 在接口中 java.util.stream.Stream<T>

flatMapToDouble

ExDoubleStream flatMapToDouble(java.util.function.Function<? super T,? extends java.util.stream.DoubleStream> mapper)

指定者:

flatMapToDouble 在接口中 java.util.stream.Stream<T>

distinct

ExStream<T> distinct()

指定者:

distinct 在接口中 java.util.stream.Stream<T>

sorted

ExStream<T> sorted()

指定者:

sorted 在接口中 java.util.stream.Stream<T>

sorted

ExStream<T> sorted(Comparator<? super T> comparator)

指定者:

sorted 在接口中 java.util.stream.Stream<T>

peek

ExStream<T> peek(java.util.function.Consumer<? super T> action)

指定者:

peek 在接口中 java.util.stream.Stream<T>

limit

ExStream<T> limit(long maxSize)

指定者:

limit 在接口中 java.util.stream.Stream<T>

skip

ExStream<T> skip(long n)

指定者:

skip 在接口中 java.util.stream.Stream<T>

sequential

ExStream<T> sequential()

指定者:

sequential 在接口中 java.util.stream.BaseStream<T,java.util.stream.Stream<T>>

parallel

ExStream<T> parallel()

指定者:

parallel 在接口中 java.util.stream.BaseStream<T,java.util.stream.Stream<T>>

unordered

ExStream<T> unordered()

指定者:

unordered 在接口中 java.util.stream.BaseStream<T,java.util.stream.Stream<T>>

onClose

ExStream<T> onClose(Runnable closeHandler)

指定者:

onClose 在接口中 java.util.stream.BaseStream<T,java.util.stream.Stream<T>>

toList

default ExList<T> toList()

Collect items to a list

toArrayList

default ExArrayList<T> toArrayList()

Collect items to array list

toLinkedList

default ExArrayList<T> toLinkedList()

Collect items to linked list

toSet

default ExSet<T> toSet()

Collect item to a set

toHashSet

default ExHashSet<T> toHashSet()

Collect item to a hash set

toLinkedHashSet

default ExLinkedHashSet<T> toLinkedHashSet()

Collect item to a linked hash set

toTreeSet

default ExTreeSet<T> toTreeSet()

Collect item to a linked hash set

toMap

default <K,U> ExMap<K,U> toMap(java.util.function.Function<? super T,? extends K> keyMapper,
                               java.util.function.Function<? super T,? extends U> valueMapper)

Collect item to a map. If the mapped keys contains duplicates, later value will override the older value.

类型参数:

K - key type

U - value type

参数:

keyMapper - get map key

valueMapper - get map value

返回:

the map

toMap

default <K,U> ExMap<K,U> toMap(java.util.function.Function<? super T,? extends K> keyMapper,
                               java.util.function.Function<? super T,? extends U> valueMapper,
                               java.util.function.BinaryOperator<U> merger)

Collect item to a map.

类型参数:

K - key type

U - value type

参数:

keyMapper - get map key

valueMapper - get map value

merger - a merge function, used to resolve collisions between values associated with the same key

返回:

the map

toHashMap

default <K,U> ExHashMap<K,U> toHashMap(java.util.function.Function<? super T,? extends K> keyMapper,
                                       java.util.function.Function<? super T,? extends U> valueMapper)

Collect item to a hash map. If the mapped keys contains duplicates, later value will override the older value.

类型参数:

K - key type

U - value type

参数:

keyMapper - get map key

valueMapper - get map value

返回:

the map

toHashMap

default <K,U> ExHashMap<K,U> toHashMap(java.util.function.Function<? super T,? extends K> keyMapper,
                                       java.util.function.Function<? super T,? extends U> valueMapper,
                                       java.util.function.BinaryOperator<U> merger)

Collect item to a hash map.

类型参数:

K - key type

U - value type

参数:

keyMapper - get map key

valueMapper - get map value

merger - a merge function, used to resolve collisions between values associated with the same key

返回:

the map

toLinkedHashMap

default <K,U> ExLinkedHashMap<K,U> toLinkedHashMap(java.util.function.Function<? super T,? extends K> keyMapper,
                                                   java.util.function.Function<? super T,? extends U> valueMapper)

Collect item to a linked hash map. If the mapped keys contains duplicates, later value will override the older value.

类型参数:

K - key type

U - value type

参数:

keyMapper - get map key

valueMapper - get map value

返回:

the map

toLinkedHashMap

default <K,U> ExLinkedHashMap<K,U> toLinkedHashMap(java.util.function.Function<? super T,? extends K> keyMapper,
                                                   java.util.function.Function<? super T,? extends U> valueMapper,
                                                   java.util.function.BinaryOperator<U> merger)

Collect item to a linked hash map.

类型参数:

K - key type

U - value type

参数:

keyMapper - get map key

valueMapper - get map value

merger - a merge function, used to resolve collisions between values associated with the same key

返回:

the map

toTreeMap

default <K,U> ExTreeMap<K,U> toTreeMap(java.util.function.Function<? super T,? extends K> keyMapper,
                                       java.util.function.Function<? super T,? extends U> valueMapper)

Collect item to a tree map. If the mapped keys contains duplicates, later value will override the older value.

类型参数:

K - key type

U - value type

参数:

keyMapper - get map key

valueMapper - get map value

返回:

the map

toTreeMap

default <K,U> ExTreeMap<K,U> toTreeMap(java.util.function.Function<? super T,? extends K> keyMapper,
                                       java.util.function.Function<? super T,? extends U> valueMapper,
                                       java.util.function.BinaryOperator<U> merger)

Collect item to a tree map.

类型参数:

K - key type

U - value type

参数:

keyMapper - get map key

valueMapper - get map value

merger - a merge function, used to resolve collisions between values associated with the same key

返回:

the map

toConcurrentMap

default <K,U> ConcurrentMap<K,U> toConcurrentMap(java.util.function.Function<? super T,? extends K> keyMapper,
                                                 java.util.function.Function<? super T,? extends U> valueMapper)

Returns a concurrent Collector that accumulates elements into a ConcurrentMap whose keys and values are the result of applying the provided mapping functions to the input elements. If the mapped keys contains duplicates, later value will override the older value.

类型参数:

K - key type

U - value type

参数:

keyMapper - get map key

valueMapper - get map value

返回:

the map

toConcurrentMap

default <K,U> ConcurrentMap<K,U> toConcurrentMap(java.util.function.Function<? super T,? extends K> keyMapper,
                                                 java.util.function.Function<? super T,? extends U> valueMapper,
                                                 java.util.function.BinaryOperator<U> merger)

Returns a concurrent Collector that accumulates elements into a ConcurrentMap whose keys and values are the result of applying the provided mapping functions to the input elements.

类型参数:

K - key type

U - value type

参数:

keyMapper - get map key

valueMapper - get map value

merger - a merge function, used to resolve collisions between values associated with the same key

返回:

the map

join

default String join()

join list items to string

join

default String join(CharSequence delimiter)

join list items with delimiter to string

join

default String join(CharSequence delimiter,
                    CharSequence prefix,
                    CharSequence suffix)

join list items with delimiter, prefix, suffix to string