Returns the object for which this watch key was created. This method will continue to return the object even after the key is cancelled.
As the WatchService is intended to map directly on to the
native file event notification facility (where available) then many of
details on how registered objects are watched is highly implementation
specific. When watching a directory for changes for example, and the
directory is moved or renamed in the file system, there is no guarantee
that the watch key will be cancelled and so the object returned by this
method may no longer be a valid path to the directory.
Diagram: Watch