code: public static String decode(final String encoded, final String charset) 
          throws UnsupportedEncodingException {
          try {
              return s_codec.decode(encoded, charset);
          } catch (DecoderException e) {
              throw new IllegalStateException(Bundle.getErrorString("URLCodec_decodeException", new String[] {e.getMessage()}), e);
          }
      }
docs: URL decodes a string.
  @param encoded the string to decode
  @param charset the character set to use
  @return the decoded string