Creates a new directory. This method works in exactly the manner specified by the Files.createDirectory method.

Parameters:

dir the directory to create

attrs an optional list of file attributes to set atomically when creating the directory

Exceptions:

UnsupportedOperationException     if the array contains an attribute that cannot be set atomically when creating the directory

FileAlreadyExistsException     if a directory could not otherwise be created because a file of that name already exists (optional specific exception)

IOException     if an I/O error occurs or the parent directory does not exist

SecurityException     In the case of the default provider, and a security manager is installed, the checkWrite method is invoked to check write access to the new directory.

`dir`		the directory to create
`attrs`		an optional list of file attributes to set atomically when creating the directory

`UnsupportedOperationException`		if the array contains an attribute that cannot be set atomically when creating the directory
`FileAlreadyExistsException`		if a directory could not otherwise be created because a file of that name already exists (optional specific exception)
`IOException`		if an I/O error occurs or the parent directory does not exist
`SecurityException`		In the case of the default provider, and a security manager is installed, the `checkWrite` method is invoked to check write access to the new directory.