How does java get the current time, year, month, day, hour, minute and second?

Dragon? l？ =? system . current time millis()；

//New date pair

Dating? Dating? =? New? Date (l);

//Convert the date output format.

SimpleDateFormat？ Date format? =? New? Simple date format ("yyyy-MM-

dd？ HH:mm:ss”)； system . out . println(date format . format(date))；

Extended data

Package com.ob; ?

Import java.text.parseexception;

Import java.text.simpledateformat;

Import java.util.calendar;

Import java.util.date; ?

Public class DateTest {?

Public static void main(String[] args) throws ParseException {?

calendar now = calendar . getinstance()； ?

System. out.println ("year:"+now.get (calendar. Year)); ?

system . out . println(" month:"+(now . get(calendar . month)+ 1)+" ")； ?

system . out . println(" day:"+now . get(Calendar。 Month day); ?

system . out . println(" when:"+now . get(Calendar。 Time of day); ?

System.out.println ("minutes:" +now.get (calendar. Minutes)); ?

System.out.println ("seconds:" +now.get (calendar. Second)); ?

System.out.println ("current time ms:"+now.gettimeinmillis ()); ?

system . out . println(now . gettime())；

\ t \ t Date d = new Date()； ?

system . out . println(d)；

\ t \ tSimpleDateFormat SDF = new SimpleDateFormat(" yyyy-MM-DD HH:MM:ss ")；

\ t \ t string dateNowStr = SDF . format(d)； ?

System.out.println ("format date:"+datenowstr);

\t\t

\ t \ t string str = " 20 12- 1- 13 17:26:33 "；

//The format should be the same as that defined by sdf above.

\ t \ t date today = SDF . parse(str)； ?

System.out.println ("string conversion date:"+today ");

\t}

}

References:

Java- Baidu encyclopedia