如何在给定文件夹名称的情况下创建多个目录 [英] How to create multiple directories given the folder names

问题描述

我有一个文件列表，这些文件的名称由一个类组和一个id （例如science_000000001.java）

I have a list of files, the names of these files are are made of a classgroup and an id (eg. science_000000001.java)

我能够获取所有文件的名称并将其拆分，因此我将类组放入一个数组，将id放在另一个数组中。相同的值。

i am able to get the names of all the files and split them so i am putting the classgroups into one array and the ids in another.. i have it so that the arrays cant have two of the same values.

这是问题，我想用这些类组和ID创建一个目录，例如：

This is the problem, i want to create a directory with these classgroups and ids, an example:

science_000000001.java    would be in    science/000000001/science_000000001.java
science_000000002.java    would be in    science/000000002/science_000000002.java
  maths_000000001.java    would be in      maths/000000001/maths_000000001.java

但我想不出一种方法来正确遍历数组以创建适当的目录？

but i cannot think of a way to loop through the arrays correctly to create the appropriate directories?

我也可以自己创建文件夹，只是获得正确的目录是问题所在，有人有什么想法吗？

Also i am able to create the folders myself, its just getting the correct directories is the problem, does anyone have any ideas?

推荐答案

给出：

String filename = "science_000000001.java";

然后

File fullPathFile = new File(filename.replaceAll("(\\w+)_(\\d+).*", "$1/$2/$0"));

为您提供文件的完整路径，在这种情况下为 science / 000000001 /science_000000001.java

gives you the full path of the file, in this case science/000000001/science_000000001.java

如果要创建目录，请使用以下命令：

If you want to create the directory, use this:

fullPathFile.getParentFile().mkdirs();

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