Some date operations that are noticed during development are generally called the dateutil class.

Package COM. put. util; import Java. text. parseexception; import Java. text. simpledateformat; import Java. util. calendar; import Java. util. date;/*** @ classname: dateutil * @ Description: time help class * @ author yegz * @ date 10:41:26 */public class dateutil {/*** @ title: getcurrtime * @ Description: yyyy-mm-dd't'hh: mm: SS * @ throws parseexception * @ return date * @ author yegz * @ date 2014-9-12 10:42:25 am */public static date getcurrtime () throws parseexception {simpledateformat df = new simpledateformat ("yyyy-mm-dd't'hh: mm: SS"); // set the date format string datetime = DF. format (new date (); Return DF. parse (datetime);}/*** @ title: getcurrtimestring * @ Description: yyyy-mm-dd't'hh: mm: SS * @ throws parseexception * @ return string * @ author yegz * @ date 2014-9-12 10:41:43 am */public static string getcurrtimestring () throws parseexception {simpledateformat df = new simpledateformat ("yyyy-mm-dd't'hh: mm: SS"); // set the date format return DF. format (new date ();}/*** @ title: getcurrtimetonott * @ Description: yyyy-mm-dd hh: mm: SS * @ throws parseexception * @ return date * @ author yegz * @ date 2014-9-12 10:49:57 am */public static date getcurrtimetonott () throws parseexception {simpledateformat df = new simpledateformat ("yyyy-mm-dd hh: mm: SS"); // set the date format string datetime = DF. format (new date (); Return DF. parse (datetime);}/*** @ title: getcurrtimestringtonott * @ Description: yyyy-mm-dd hh: mm: SS * @ throws parseexception * @ return string * @ author yegz * @ date 2014-9-12 10:50:09 am */public static string getcurrtimestringtonott () throws parseexception {simpledateformat df = new simpledateformat ("yyyy-mm-dd hh: mm: SS"); // set the date format return DF. format (new date ();}/*** @ title: getcurrtimejusthms * @ Description: hh: mm: SS * @ throws parseexception * @ return date * @ author yegz * @ date 2014-9-12 am 10:54:30 */public static date getcurrtimejusthms () throws parseexception {simpledateformat df = new simpledateformat ("HH: MM: SS "); // set the date format string datetime = DF. format (new date (); Return DF. parse (datetime);}/*** @ title: getcurrtimestringjusthms * @ Description: hh: mm: SS * @ throws parseexception * @ return string * @ author yegz * @ date 2014-9-12 am 10:54:51 */public static string getcurrtimestringjusthms () throws parseexception {simpledateformat df = new simpledateformat ("HH: MM: SS "); // set the date format return DF. format (new date ();}/*** @ title: getcurrtimetomyformat * @ Description: custom format, obtain the current time * @ Param Format * @ throws parseexception * @ return date * @ author yegz * @ date 10:59:57 */public static date getcurrtimetomyformat (string format) throws parseexception {simpledateformat df = new simpledateformat (format); // set the date format string datetime = DF. format (new date (); Return DF. parse (datetime);}/*** @ title: getcurrtimestringjusthms * @ Description: custom format, obtain the current time * @ Param Format * @ throws parseexception * @ return string * @ author yegz * @ date 11:00:32 */public static string getcurrtimestringjusthms (string format) throws parseexception {simpledateformat df = new simpledateformat (format); // set the date format return DF. format (new date ();}/*** @ title: getweekshowint * @ Description: displays the number of days in a week, number Display * @ Param date * @ return int * @ author yegz * @ date 11:12:53 */public static int getweekshowint (date) {calendar Cal = calendar. getinstance (); Cal. settime (date); Return Cal. get (calendar. day_of_week)-1;}/*** @ title: getweekshowstring * @ description, text display * @ Param date * @ return string * @ author yegz * @ date 11:13:55 */public static string getweekshowstring (date) {calendar ar Cal = calendar. getinstance (); string week = ""; Cal. settime (date); int today = Cal. get (calendar. day_of_week)-1; Switch (today) {Case 1: Week = "Monday"; break; Case 2: Week = "Tuesday"; break; Case 3: week = "Wednesday"; break; Case 4: Week = "Thursday"; break; Case 5: Week = "Friday"; break; Case 6: Week = "Saturday "; break; Case 0: Week = "Sunday"; break; default: break;} return week;}/*** @ title: gettodayweekshowint * @ Description: get today's Week, number Display * @ return int * @ author yegz * @ date 11:14:32 */public static int gettodayweekshowint () {calendar Cal = calendar. getinstance (); Cal. settime (new date (); Return Cal. get (calendar. day_of_week)-1;}/*** @ title: gettodayweekshowstring * @ Description: get today's Week, text display * @ return string * @ author yegz * @ date 11:15:20 */public static string gettodayweekshowstring () {calendar Cal = calendar. getinstance (); string week = ""; Cal. settime (new date (); int today = Cal. get (calendar. day_of_week)-1; Switch (today) {Case 1: Week = "Monday"; break; Case 2: Week = "Tuesday"; break; Case 3: week = "Wednesday"; break; Case 4: Week = "Thursday"; break; Case 5: Week = "Friday"; break; Case 6: Week = "Saturday "; break; Case 0: Week = "Sunday"; break; default: break;} return week;}/** test */public static void main (string [] ARGs) throws parseexception {// system. out. println (dateutil. getcurrtimestringjusthms (); // system. out. println (dateutil. gettodayweekshowint (new date (); system. out. println (dateutil. gettodayweekshowstring ());}}

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Some date operations that are noticed during development are generally called the dateutil class.