code: private String loadConvert (char[] in, int off, int len, char[] convtBuf) {
          if (convtBuf.length < len) {
              int newLen = len * 2;
              if (newLen < 0) {
                  newLen = Integer.MAX_VALUE;
              }
              convtBuf = new char[newLen];
          }
          char aChar;
          char[] out = convtBuf;
          int outLen = 0;
          int end = off + len;
  
          while (off < end) {
              aChar = in[off++];
              if (aChar == '\\') {
                  aChar = in[off++];
                  if(aChar == 'u') {
                      // Read the xxxx
                      int value=0;
                      for (int i=0; i<4; i++) {
                          aChar = in[off++];
                          switch (aChar) {
                            case '0': case '1': case '2': case '3': case '4':
                            case '5': case '6': case '7': case '8': case '9':
                               value = (value << 4) + aChar - '0';
                               break;
                            case 'a': case 'b': case 'c':
                            case 'd': case 'e': case 'f':
                               value = (value << 4) + 10 + aChar - 'a';
                               break;
                            case 'A': case 'B': case 'C':
                            case 'D': case 'E': case 'F':
                               value = (value << 4) + 10 + aChar - 'A';
                               break;
                            default:
                                throw new IllegalArgumentException(
                                             "Malformed \\uxxxx encoding.");
                          }
                       }
                      out[outLen++] = (char)value;
                  } else {
                      if (aChar == 't') aChar = '\t';
                      else if (aChar == 'r') aChar = '\r';
                      else if (aChar == 'n') aChar = '\n';
                      else if (aChar == 'f') aChar = '\f';
                      out[outLen++] = aChar;
                  }
              } else {
                  out[outLen++] = aChar;
              }
          }
          return new String (out, 0, outLen);
      }
docs: /*
  Converts encoded &#92;uxxxx to unicode chars
  and changes special saved chars to their original forms