Once the jar file is downloaded to you computer, just open it (by clicking the file) to run it (JRE must be installed first).
This is a powerful tool to rename multiple files. It can be used to remove unwanted characters or replace them.
It can also be used to get a directory listing and save it to a file on disk.
The file list can be opened in Word or WordPad to edit the list and/or print it out.
I am not responsible for whatever happens when you use this software.
It can be harmful to your file names if it is not used properly. This may prevent your programs or system from running properly.