Java 8 java.util.stream.Streams [英] Java 8 java.util.stream.Streams

问题描述

我看到很多博客文章都提到了Streams类，我看到它曾经是 lambda分支API的一部分。它现在似乎是非公共API，它与之前的实现不匹配。是否有不同的方法来执行 Streams.concat（）或将多个值附加到流？

I see many blog posts mention a Streams class and I see it was once part of the lambda branch API. It appears to be non-public API now and it does not match the previous implementation. Is there a different way to do Streams.concat() or to append multiple values to a stream?

推荐答案

Streams 类被拆分，其中一些方法被移动到 StreamSupport ，在最新版本中不包含 concat 方法。 此处解释了拆分的基本原理。

The Streams class got split and some of its methods were moved to StreamSupport, which does not contain a concat method in the latest build. The rationale for the split is explained here.

concat 的具体情况。 java.net/pipermail/lambda-libs-spec-experts/2013-May/001718.html\">这篇文章，建议删除它，显然已删除。

The specific case of concat has been mentioned separately in this post where it was proposed for removal and was apparently removed.

然而后来的帖子似乎表示它将在未来版本中重新出现。

However a later post seems to indicate that it will reappear in future builds.

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