如何在Java日历中获得第二天和上一天？

Question

如何在Java日历中获得第二天和上一天？

Answer 1

You can either user the Calendar class like icyrock said or use Joda Time. You can see examples of Joda time here . I recommend using Joda time highly.

Jodatime code snippet:

 DateTime dt = new DateTime(date); //the date you want to add days to
 Date addedDate = dt.plusDays(daysToAdd).toDate(); //the added days date
 Date subtractedDate = dt.minusDays(daysToMinus).toDate(); //the subtracted days date

Answer 2

Calendar.add(Calendar.DATE, -1)
Calendar.add(Calendar.DATE, 1)