code: protected final String toJavaResourceName(String bundleName, Locale locale) {
      String fullName = bundleName;
      final String localeName = toLocaleStr(locale);
      final String suffix = "properties";
      if (!"".equals(localeName)) fullName = fullName + "_" + localeName;
      StringBuilder sb = new StringBuilder(fullName.length() + 1 + suffix.length());
      sb.append(fullName.replace('.', '/')).append('.').append(suffix);
      return sb.toString();
    }
docs: java properties bundle name
  
  @param bundleName
  @param locale
  @return convented properties ended file path.