Something like:

   private static void process(String name) {
      File f = new File(name);
      if (f.isDirectory()) {
         String list[] = f.list();
         for (int i = 0; i < list.length; i++) {
            process(name + f.separator + list[i]);
         }
      } else if (f.isFile()) {
         // parse content of f.getName()
      }
   }

I would think.

Arne

You do it just like you described is: process all the files in all the
(sub)directories.

But I think this isn't a parsing problem. Is it a homework? Do you need code? ;-)