According to its comment, setJspFiles() takes a comma-separated list of files, but the StringTokenizer it uses separates by comma or space: StringTokenizer tok = new StringTokenizer(jspFiles, " ,"); Either the space should be removed from " ," (my preference, to allow filenames with spaces), or the comment should be fixed.
Good catch, thanks for reporting this. I'll remove the space from StringTokenizer, as there's no reason to require it.
Fixed.