File.mkdir or mkdirs return false - Reason?

Question

Why file.mkdir is returning false?

Google indicates that there could be several reasons (e.g. security, permissions, pathname, etc).

My questions:

Answer 1

1. No, there's no way to find the exact reason mkdirs() returns false, at least not from within Java, as it would probably be OS dependent.

2. A SecurityException is thrown if there is a security violation in the SecurityManager's checkRead() and checkWrite() methods. The exception isn't thrown if there is an OS permissions issue.

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Additionally, note that if you call File.mkdir(), and the parent directory doesn't exist, mkdir() will return false. However, calling File.mkdirs() will create the non-existent parent directories.