static int linesOfCode_javaTok(S text) {
  LS tok = javaTok(text);
  int lines = 0;
  bool codeInCurrentLine;
  for i over tok: {
    S t = tok.get(i);
    if (odd(i)) {
      // code token
      int lTok = l(t);
      for j to lTok: {
        char c = t.charAt(j);
        if (c == '\n')
          codeInCurrentLine = false;
        else if (!isSpaceEtc(c) && !codeInCurrentLine) {
          set codeInCurrentLine;
          ++lines;
        }
      }
    } else {
      // space token
      if (codeInCurrentLine && containsNewLine(t)) codeInCurrentLine = false;
    }
  }
  
  ret lines;
}