public String decode(String value) throws DecoderException {
  if (value == null) {
    return null;
  }
  try {
    return decodeText(value);
  }
 catch (  UnsupportedEncodingException e) {
    throw new DecoderException(e.getMessage());
  }
}

public String decode ( String value ) throws DecoderException { if ( value == null ) { return null ; } try { return decodeText ( value ) ; } catch ( UnsupportedEncodingException e ) { throw new DecoderException ( e . getMessage ( ) ) ; } }
decodes a base64 string into its original form . escaped characters are converted back to their original representation .
