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Update 6-Stream Pipelines.md #19

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Update 6-Stream Pipelines.md #19

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2 changes: 1 addition & 1 deletion 6-Stream Pipelines.md
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Expand Up @@ -121,7 +121,7 @@ for(String str : strings){

注意这里使用的是“*操作(operation)*”一词，指的是“Stream中间操作”的操作，很多Stream操作会需要一个回调函数（Lambda表达式），因此一个完整的操作是<*数据来源，操作，回调函数*>构成的三元组。Stream中使用Stage的概念来描述一个完整的操作，并用某种实例化后的*PipelineHelper*来代表Stage，将具有先后顺序的各个Stage连到一起，就构成了整个流水线。跟Stream相关类和接口的继承关系图示。

还有*IntPipeline, LongPipeline, DoublePipeline*没在图中画出，这三个类专门为三种基本类型（不是包装类型）而定制的，跟*ReferencePipeline*是并列关系。图中*Head*用于表示第一个Stage，即调用调用诸如*Collection.stream()*方法产生的Stage，很显然这个Stage里不包含任何操作；*StatelessOp*和*StatefulOp*分别表示无状态和有状态的Stage，对应于无状态和有状态的中间操作。
还有*IntPipeline, LongPipeline, DoublePipeline*没在图中画出，这三个类专门为三种基本类型（不是包装类型）而定制的，跟*ReferencePipeline*是并列关系。图中*Head*用于表示第一个Stage，即调用诸如*Collection.stream()*方法产生的Stage，很显然这个Stage里不包含任何操作；*StatelessOp*和*StatefulOp*分别表示无状态和有状态的Stage，对应于无状态和有状态的中间操作。

Stream流水线组织结构示意图如下：

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