| | |
|---|
| | | String timestampPart = "" + (Math.random() * 10000) * (System.currentTimeMillis() / 10000); |
|---|
| | | timestampPart = timestampPart.replace(".", "").replace("E", ""); |
|---|
| | | timestampPart = timestampPart.substring(0, 5); |
|---|
| | | return dateTime + timestampPart; |
|---|
| | | |
|---|
| | | int day = calendar.get(Calendar.DAY_OF_MONTH); |
|---|
| | | double v = Math.random() * 10000; |
|---|
| | | int dayNum = (int) ((v % 3.33) * day); |
|---|
| | | String dayPart = "0" + dayNum; |
|---|
| | | dayPart = dayPart.substring(dayPart.length() - 2); |
|---|
| | | return dateTime + timestampPart + dayPart; |
|---|
| | | } |
|---|
| | | |
|---|
| | | public static void main(String[] args) { |
|---|
| | | System.err.println(generateVolumeSn()); |
|---|
| | | } |
|---|
| | | |
|---|
| | | } |
|---|
