Task

Rename:

   a file called     input.txt     into     output.txt     and 
   a directory called     docs     into     mydocs.


This should be done twice:  
once "here", i.e. in the current working directory and once in the filesystem root.

It can be assumed that the user has the rights to do so.

(In unix-type systems, only the user root would have
sufficient permissions in the filesystem root.)




(import '(java.io File))
 
(.renameTo (File. "input.txt") (File. "output.txt"))
(.renameTo (File. "docs") (File. "mydocs"))
 
(.renameTo 
 (File. (str (File/separator) "input.txt"))
 (File. (str (File/separator) "output.txt")))
(.renameTo 
 (File. (str (File/separator) "docs"))
 (File. (str (File/separator) "mydocs")))