code: @Override
      public void characters (char ch[], int start, int len) {
          while (len > 0 && Character.isWhitespace(ch[start])) {
              ++start;
              --len;
          }
          while (len > 0 && Character.isWhitespace(ch[start+len-1])) {
              --len;
          }
          if (_text.length() > 0) {
              _text.append(' ');
          }
          _text.append(ch, start, len);
      }
docs: Receive notification of character data inside an element.