Java集合查询: creating array of mkdir commands

Question

我有一个String的LinkedHashSet，如下所示:

Set<String> dirSet = new LinkedHashSet<String>();

上面Set中有12个String元素，如下:

root/dir1/dir2/dir3/dir4/dir5/baseDir1/
root/dir1/dir2/dir3/dir4/dir5/baseDir1/subDir/
root/dir1/dir2/dir3/dir4/dir5/baseDir2/
root/dir1/dir2/dir3/dir4/dir5/baseDir2/subDir/
root/dir1/dir2/dir3/dir4/dir5/baseDir3/
root/dir1/dir2/dir3/dir4/dir5/baseDir3/subDir/
root/dir1/dir2/dir3/dir4/dir5/baseDir4/
root/dir1/dir2/dir3/dir4/dir5/baseDir4/subDir/
root/dir1/dir2/dir3/dir4/dir5/baseDir5/
root/dir1/dir2/dir3/dir4/dir5/baseDir5/subDir/
root/dir1/dir2/dir3/dir4/dir5/baseDir6/
root/dir1/dir2/dir3/dir4/dir5/baseDir6/subDir/

我想编写一个方法来迭代上面的Set，方法的输出是包含命令的String Array创建上述目录结构。

输出String Array应包含String元素，如下所示:

mkdir root/
mkdir root/dir1/
mkdir root/dir1/dir2/
mkdir root/dir1/dir2/dir3/
mkdir root/dir1/dir2/dir3/dir4/
mkdir root/dir1/dir2/dir3/dir4/dir5/
mkdir root/dir1/dir2/dir3/dir4/dir5/baseDir1/
mkdir root/dir1/dir2/dir3/dir4/dir5/baseDir1/subDir/
mkdir root/dir1/dir2/dir3/dir4/dir5/baseDir2/
mkdir root/dir1/dir2/dir3/dir4/dir5/baseDir2/subDir/
mkdir root/dir1/dir2/dir3/dir4/dir5/baseDir3/
mkdir root/dir1/dir2/dir3/dir4/dir5/baseDir3/subDir/
mkdir root/dir1/dir2/dir3/dir4/dir5/baseDir4/
mkdir root/dir1/dir2/dir3/dir4/dir5/baseDir4/subDir/
mkdir root/dir1/dir2/dir3/dir4/dir5/baseDir5/
mkdir root/dir1/dir2/dir3/dir4/dir5/baseDir5/subDir/
mkdir root/dir1/dir2/dir3/dir4/dir5/baseDir6/
mkdir root/dir1/dir2/dir3/dir4/dir5/baseDir6/subDir/

通过迭代 Set 并借助 String 的帮助，我能够达到 dir5 级别，然后进入一级，即直到 baseDir1/subDir/。 split() 方法来创建 token 。

但是，当我再次必须升级时(baseDir2、baseDir3 等)，我无法应对

我怎样才能实现这个目标？

感谢您的阅读!

Answer 1

您需要使用 mkdirs 而不是 mkdir:

http://docs.oracle.com/javase/1.4.2/docs/api/java/io/File.html#mkdirs()