| symbol | meaning |
|---|---|
| yyyy | Year |
| MM | moon |
| dd | Day |
| HH | hour |
| mm | point |
| ss | Second |
| SSS | millisecond |
long time = System.currentTimeMillis();
SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmssSSS");
//SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss-SSS");
String date = sdf.format(time);