Java.text.SimpleDateFormat
lastmod 2020-01-21created 2020-01-142 edits
Among the functions of Java's System class, the method that returns the current time is as follows.
The return type is long; it returns the value in units of 1/1000 second counted from January 1, 1970.
Simple usage
public static final String getTimeStamp() {
Calendar calender = Calendar.getInstance();
calender.setTimeInMillis(System.currentTimeMillis());
SimpleDateFormat format = new SimpleDateFormat("yyMMdd-HHmmssSSS", Locale.KOREA);
return format.format(calender.getTime());
}
Getting the current date and time
long now = System.currentTimeMillis();
SimpleDateFormat sdfNow = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String strNow = sdfNow.format(new Date(now));
How to convert a Timestamp to yyyy-mm-dd hh:mm:ss format?
SimpleDateFormat sdfCurrent = new SimpleDateFormat ("yyyy-mm-dd hh:mm:ss");
Timestamp currentTime = new Timestamp(Long.parseLong("1141952708997"));
String today = sdfCurrent.format(currentTime);
System.out.println("today==="+today);