code: public static void addPrj( String folder, String epsg ) throws Exception {
          OmsFileIterator fiter = new OmsFileIterator();
          fiter.inFolder = folder;
          fiter.pCode = epsg;
          fiter.process();
      }
docs: Utility to add to all found files in a given folder the prj file following the supplied epsg.
  
  @param folder the folder to browse.
  @param epsg the epsg from which to take the prj.
  @throws Exception