String s = "不一样的星期五";
print(s + ": length: " + s.length());
for (int i = 0; i < s.length(); i++) {
    char c = s.charAt(i);
    String sh = String.valueOf(c);
    byte [] buf = sh.getBytes("UTF-8");
    List l = new ArrayList();
    for (int j = 0; j < buf.length; j++) {
        l.add(buf[j]);
    }
    print("[" + i + "] char: " + sh + " length: " + buf.length + ": bytes: " + l);
}