Summary of common methods in Calendar in Java

1 //get current moment yyyy-mm-dd HH:mm:ss2Calendar Calendar =calendar.getinstance ();3SimpleDateFormat SDF =NewSimpleDateFormat ("Yyyy-mm-dd HH:mm:ss");//Set Date format4String now =Sdf.format (Calendar.gettime ());5 System.out.println (now);6 7 //get current moment yyyy-mm-dd8Calendar Calendar =calendar.getinstance ();9SimpleDateFormat SDF1 =NewSimpleDateFormat ("Yyyy-mm-dd");//Set Date formatTenString Now1 =Sdf1.format (Calendar.gettime ()); One System.out.println (NOW1); A  - //get current moment yyyy-mm -Calendar Calendar =calendar.getinstance (); theSimpleDateFormat SDF2 =NewSimpleDateFormat ("yyyy-mm");//Set Date format -String Now2 =Sdf2.format (Calendar.gettime ()); - System.out.println (now2); -  + //get current moment, Month day -Calendar Calendar =calendar.getinstance (); + intYear =Calendar.get (calendar.year); A intmonth = Calendar.get (calendar.month) + 1; at intDay =Calendar.get (calendar.day_of_month); -SYSTEM.OUT.PRINTLN (Year + "-" + month + "-" +Day ); -  - //gets the current time timestamp -Calendar Calendar =calendar.getinstance (); - LongTS =Calendar.gettimeinmillis (); in System.out.println (TS); -  to //get last month yyyy-mm +Calendar Calendar =calendar.getinstance (); -Calendar.add (Calendar.month, 1); theString Lastmonth =NewSimpleDateFormat ("yyyy-mm"). Format (Calendar.gettime ()); * System.out.println (lastmonth); $ Panax Notoginseng //Get yesterday Yyyy-mm-dd -Calendar Calendar =calendar.getinstance (); theCalendar.add (Calendar.date, 1); +String yesterday =NewSimpleDateFormat ("Yyyy-mm-dd"). Format (Calendar.gettime ()); A System.out.println (yesterday); the  + //converts a specified month and minute to a timestamp -SimpleDateFormat SimpleDateFormat =NewSimpleDateFormat ("Yyyy-mm-dd HH:mm:ss"); $Date date = Simpledateformat.parse ("2015-05-01 00:00:00"); $ LongTs1 =date.gettime (); - System.out.println (TS1); - //or theCalendar Calendar =calendar.getinstance (); -Calendar.set (2015, 4, 1, 0, 0, 0);//here 4 means MayWuyi LongTS2 =Calendar.gettimeinmillis (); the System.out.println (TS2); -  Wu //Converts the specified timestamp to year-month day-time seconds -SimpleDateFormat format =NewSimpleDateFormat ("Yyyy-mm-dd HH:mm:ss" ); About LongTS = 1234567899L; $String date =Format.format (TS); -Date date1 =format.parse (date); -System.out.println ("Format to String (Date):" +date); -System.out.println ("Format to Date:" + date1);

Summary of common methods in Calendar in Java