code: @Override
      public boolean accept(final File aDir, final String aFilename) {
          return new File(aDir, aFilename).isFile() && myPattern.matcher(aFilename).matches();
      }
docs: Determines whether the supplied {@link File} in the supplied directory should be included.
  
  @param aDir The directory in which the {@link File} of the file name lives
  @param aFilename A {@link File} name to compare against the regular expression; it must be a file (not a
  directory)