1) Calendar
int year,month,day,hour,minute,second; Calendar cal=Calendar.getInstance(); year=cal.get(Calendar.YEAR); month=cal.get(Calendar.MONTH)+1; day=cal.get(Calendar.DATE); hour=cal.get(Calendar.HOUR_OF_DAY); minute=cal.get(Calendar.MINUTE); second=cal.get(Calendar.SECOND); System.out.println(year+"："+month+"："+day+":"+hour+"："+minute+"："+second);
java.util.Calendar c=java.util.Calendar.getInstance();
java.text.SimpleDateFormat fmt=new java.text.SimpleDateFormat("yyyy-MM-dd-hh-mm-ss");
System.out.println(fmt.format(c.getTime()));
2) TimeStamp
Timestamp ts = new Timestamp(System.currentTimeMillis());
3) Date
Date date = new Date();
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