程序包 java.util.stream

接口 Stream.Builder<T>

类型参数:

T - the type of stream elements

所有超级接口:

Consumer<T>

封闭接口:

Stream<T>

public static interface Stream.Builder<T>
extends Consumer<T>

A mutable builder for a Stream. This allows the creation of a Stream by generating elements individually and adding them to the Builder (without the copying overhead that comes from using an ArrayList as a temporary buffer.)

A stream builder has a lifecycle, which starts in a building phase, during which elements can be added, and then transitions to a built phase, after which elements may not be added. The built phase begins when the build() method is called, which creates an ordered Stream whose elements are the elements that were added to the stream builder, in the order they were added.

从以下版本开始:

1.8

另请参阅:

Stream.builder()

方法概要

限定符和类型	方法	说明
void	accept(T t)	Adds an element to the stream being built.
default Stream.Builder<T>	add(T t)	Adds an element to the stream being built.
Stream<T>	build()	Builds the stream, transitioning this builder to the built state.

从接口继承的方法 java.util.function.Consumer

andThen

方法详细资料

accept

void accept(T t)

Adds an element to the stream being built.

指定者:

accept 在接口中 Consumer<T>

参数:

t - the input argument

抛出:

IllegalStateException - if the builder has already transitioned to the built state

add

default Stream.Builder<T> add(T t)

Adds an element to the stream being built.

参数:

t - the element to add

返回:

this builder

抛出:

IllegalStateException - if the builder has already transitioned to the built state

build

Stream<T> build()

Builds the stream, transitioning this builder to the built state. An IllegalStateException is thrown if there are further attempts to operate on the builder after it has entered the built state.

返回:

the built stream

抛出:

IllegalStateException - if the builder has already transitioned to the built state