Better way to create directories using File I have this code that generally creates directories within a directory.

File  userFolder = new File(rootPath+"/media/"+userBean.getUsername());
    File  userPhotosDir = new File(rootPath+"/media/"+userBean.getUsername()+"/photos");
    File  userAudioDir = new File(rootPath+"/media/"+userBean.getUsername()+"/tracks");
    userFolder.mkdir();
    userPhotosDir.mkdir();
    userAudioDir.mkdir();


When I this code runs it will generally look like this

The userFolder

\media\somename


The Photos folder

\media\somename\photos


The Audio Folder

\media\somename\folder


Where the photos and audio folder are inside the somename folder. while the somename folder is inside the media folder
Well, for the purpose of codereview:


There is a mkdirs() methods instead of the mkdir() method
You can use the new File(String, String) constructor to avoid taking care of slashes
If you have Java7, you can (and probably should) use Path. Especially, because there is a way to construct Paths with unlimited arguments, not only 2 as for File:

Path dir = Paths.get(rootPath, "media", userBean.getUsername(), arg1);
Files.createDirectories(dir);

You should check the return codes and errors. Could be helpful.