maven:
http://mvnrepository.com/artifact/joda-time/joda-time
1, 获取每天的零点
DateTime dt=new DateTime().withMillisOfDay(0); System.out.println(dt.toString("yyyy-MM-dd HH:mm:ss"));//结果2016-09-09 00:00:00
2, 在每天的6:30处理一些东西
DateTime dt=new DateTime().withHourOfDay(6).withMinuteOfHour(30).withSecondOfMinute(0); System.out.println(dt.toString("yyyy-MM-dd HH:mm:ss"));//结果2016-09-09 06:30:00
3, 在每月的7号的6:30处理一些东西
DateTime dt=new DateTime().withDayOfMonth(7).withHourOfDay(6).withMinuteOfHour(30).withSecondOfMinute(0); System.out.println(dt.toString("yyyy-MM-dd HH:mm:ss"));//结果2016-09-07 06:30:00
4, 在每年的8月的7号的6:30处理一些东西
DateTime dt=new DateTime().withMonthOfYear(8).withDayOfMonth(7).withHourOfDay(6).withMinuteOfHour(30).withSecondOfMinute(0); System.out.println(dt.toString("yyyy-MM-dd HH:mm:ss"));//结果2016-08-07 06:30:00
5, 获取每个月的第一天和最后一天
DateTime dateTime=new DateTime(); System.out.println(dateTime.dayOfMonth().withMinimumValue().dayOfMonth().get()); System.out.println(dateTime.dayOfMonth().withMaximumValue().dayOfMonth().get());//结果130
6, 获取每天的零点的下一天零点
DateTime dt=new DateTime().withMillisOfDay(0).plusDays(1); System.out.println(dt.toString("yyyy-MM-dd HH:mm:ss"));
7, 获取日期差
DateTime start=new DateTime(2015,5,4,12,20); DateTime start=new DateTime(2015,5,4,12,20); DateTime end=new DateTime(2015,5,6,3,10); Period period=new Period(start,end); System.out.println("month:"+period.getMonths()); System.out.println("days:"+period.getDays()); System.out.println("hours:"+period.getHours()); System.out.println("minutes:"+period.getMinutes()); System.out.println("second:"+period.getSeconds());//结果month:0days:1hours:14minutes:50second:0
8, 单独获取天,小时,分钟,秒
DateTime start=new DateTime(2015,5,4,12,20); DateTime end =new DateTime(2015,5,5,12,00); System.out.println(Days.daysBetween(start,end).getDays()); System.out.println(Hours.hoursBetween(start,end).getHours()); System.out.println(Minutes.minutesBetween(start,end).getMinutes()); System.out.println(Seconds.secondsBetween(start,end));
9, 时间判断是否在某个范围以及获取时间差的毫秒
DateTime start=new DateTime(2015,5,4,12,20); DateTime end =new DateTime(2015,5,5,12,00); Interval interval=new Interval(start,end); System.out.println(interval.contains(new DateTime(2015,5,5,11,00))); Duration duration=new Duration(start,end); System.out.println(duration.getStandardHours());