如何从DirectoryStream创建流 [英] How to make a Stream from a DirectoryStream

问题描述

在阅读 DirectoryStream 的API时，我错过了很多功能。首先，它建议使用for循环从流到 List 。我错过了 DirectoryStream 不是 Stream 的事实。

When reading the API for DirectoryStream I miss a lot of functions. First of all it suggests using a for loop to go from stream to List. And I miss the fact that it a DirectoryStream is not a Stream.

如何制作 流<路径> Java 8中的java / nio / file / DirectoryStream.html> DirectoryStream ？

How can I make a Stream<Path> from a DirectoryStream in Java 8?

推荐答案

DirectoryStream 不是 Stream （它自Java 7以来一直存在于流之前api是在Java 8中引入的，但是它实现了 Iterable< Path> 接口，所以你可以写：

DirectoryStream is not a Stream (it's been there since Java 7, before the streams api was introduced in Java 8) but it implements the Iterable<Path> interface so you could write:

try (DirectoryStream<Path> ds = ...) {
  Stream<Path> s = StreamSupport.stream(ds.spliterator(), false);
}

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