Checking Folder & subfolders

Question

I've made a method that checks 2 strings passed into itself that see's if a root folder and subfolder within it exists and if they don't, create them.

It's easy enough and it works well but my only issue is when I want to check for a root folder only it returns and error since one of the strings is empty.

Is there a smart way of checking for a path like "/data" , "/data/files" or "/data/files/morefiles" to see if all folders exists and if not, create the missing ones?

possible duplicate of [Create a folder if one doesn't exist](http://stackoverflow.com/questions/14666170/create-a-folder-if-one-doesnt-exist) — Rohit Jain, Aug 21 '13 at 13:32
possible duplicate of [Is there a proper way to check for file/directory existence in Java?](http://stackoverflow.com/questions/7996524/is-there-a-proper-way-to-check-for-file-directory-existence-in-java) — Math, Aug 21 '13 at 13:36

score 3 · Answer 1 · answered Aug 21 '13 at 13:28

3

There is a ready-made method which creates all the missing parent directories: File#mkdirs().

answered Aug 21 '13 at 13:28

Marko Topolnik

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score 1 · Answer 2 · answered Aug 21 '13 at 13:30

1

new File("/path/to/subdirectory").mkdirs();

answered Aug 21 '13 at 13:30

gawi

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score 1 · Answer 3 · answered Aug 21 '13 at 13:31

1

You can use .mkdirs() method on any File object

// Create a directory; all non-existent ancestor directories are
// automatically created
success = (new File("../potentially/long/pathname/without/all/dirs")).mkdirs();

answered Aug 21 '13 at 13:31

sam_codes

191
6

score 0 · Answer 4 · answered Aug 21 '13 at 13:29

you can take the string and split it using split("\\"); after that, build in a for statement the path, each time checking and creating the folder if needed

String path;// Your path, that you get as parameter
String[] pathArr = path.split("\\");
string str = pathArr[0];
int size = pathArr.size();

for(int i = 1; i <  size ; i++)
{
    // Check and create folder if needed
    str = str + "\\" + pathArr[i];
}

score 0 · Answer 5 · answered Aug 21 '13 at 13:32

0

You will want to check out the File api. Specifically:

isDirectory()

exists()

mkdirs()

answered Aug 21 '13 at 13:32

Grammin

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Checking Folder & subfolders

5 Answers5