如果File不是文件或目录，如何找出它？ [英] How can I find out if a File is a file or directory if it does not exist?

问题描述

File.isFile（）和 File.isDirectory（）不仅在<$ c时返回false $ c>文件不是指定的类型，但是当文件系统上不存在文件本身时。如何确定文件表示文件或目录何时不存在？

File.isFile() and File.isDirectory() both return false not only when the File is not the specified type, but also when the File itself does not exist on the filesystem. How can I determine whether the File represents a file or a directory when it does not exist?

推荐答案

通常，特定路径可以表示目录和文件。在该路径上创建目录或文件之前，它对于其中一个或另一个的概念是无效的。

In general, a specific path can represent both a directory and a file. Until there is either a directory or a file created at that path, the notion of it being for one or the other is invalid.

但是有一个特例。如果路径以路径分隔符结束（在类Unix系统上为'/'，在Windows上为'\'，在其他系统上可能完全不同），那么至少在类Unix系统上，路径不能是文件的路径。我不知道这对所有系统是否有效。

There is however a special case. If the path ends with a path separator ('/' on Unix-like systems, '\' on Windows and maybe something completely different on other systems), then at least on Unix-like systems the path cannot be that of a file. I do not know if this is valid for all systems though.

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