[Java] Calendar

1 /* 2 * The general operation of the Calendar is shown3  */  4 Importjava.util.Date; 5 ImportJava.text.SimpleDateFormat; 6 ImportJava.text.DateFormat; 7 ImportJava.util.Calendar; 8   9  Public classTestTen {   One    PublicTest () A   {   -   }   -    the    Public Static voidMain (string[] args) -   {   -     //string Conversion date format -DateFormat Fmtdatetime =NewSimpleDateFormat ("Yyyy-mm-dd HH:mm:ss");  +     //Get date format Objects -Date Date =Fmtdatetime.parse (Strdatemake);  +    A     //Full display date time atString str = (NewSimpleDateFormat ("Yyyy-mm-dd HH:mm:ss:SSS")). Format (NewDate ());  - System.out.println (str);  -    -     //Create a Calendar object -Calendar Calendar =calendar.getinstance ();  -     //Initialize Calendar object, but not necessary unless reset time is required inCalendar.settime (NewDate ());  -    to     //settime Similar to the above line +     //Date date = new Date ();  -     //calendar.settime (date);  the    *     //Show Year $     intYear =Calendar.get (calendar.year); Panax NotoginsengSystem.out.println ("Year is =" +string.valueof (year));  -    the     //Display month (starting from 0, actual display to add one) +     intMONTH =Calendar.get (Calendar.month);  ASYSTEM.OUT.PRINTLN ("Month is =" + (month + 1));  the    +     //the nth day of the year -     intDay_of_year =Calendar.get (calendar.day_of_year);  $System.out.println ("day_of_year is =" +day_of_year);  $    -     //Nth day of the month -     intDay_of_month =Calendar.get (Calendar.day_of_month);  theSystem.out.println ("Day_of_month =" +string.valueof (day_of_month));  -   Wuyi     //after 3 hours theCalendar.add (Calendar.hour_of_day, 3);  -     intHour_of_day =Calendar.get (Calendar.hour_of_day);  WuSystem.out.println ("Hour_of_day + 3 =" +hour_of_day);  -    About     //current number of minutes $     intMINUTE =Calendar.get (Calendar.minute);  -System.out.println ("MINUTE =" +MINUTE);  -    -     //15 minutes later . ACalendar.add (Calendar.minute, 15);  +MINUTE =Calendar.get (Calendar.minute);  theSystem.out.println ("MINUTE + 15 =" +MINUTE);  -    $     //30 minutes ago theCalendar.add (Calendar.minute, 30);  theMINUTE =Calendar.get (Calendar.minute);  theSystem.out.println ("MINUTE-30 =" +MINUTE);  the    -     //formatted display instr = (NewSimpleDateFormat ("Yyyy-mm-dd HH:mm:ss:SS") . Format (Calendar.gettime ());  the System.out.println (str);  the    About     //Reset Calendar Show Current Time theCalendar.settime (NewDate ());  thestr = (NewSimpleDateFormat ("Yyyy-mm-dd HH:mm:ss:SS") . Format (Calendar.gettime ());  the System.out.println (str);  +    -     //Create a Calendar to compare time theCalendar calendarnew =calendar.getinstance (); Bayi    the     //set to 5 hours ago, the latter large, show-1 theCalendarnew.add (Calendar.hour, 5);  -System.out.println ("Time Comparison:" +Calendarnew.compareto (calendar));  -    the     //set 7 hours later, the former large, showing 1 theCalendarnew.add (Calendar.hour, +7);  theSystem.out.println ("Time Comparison:" +Calendarnew.compareto (calendar));  the    -     //return 2 hours, same time, display 0 theCalendarnew.add (Calendar.hour, 2);  theSystem.out.println ("Time Comparison:" +Calendarnew.compareto (calendar));  the   }  94}

[Java] Calendar