如何在Java日历中获得第二天和上一天?
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
Calendar.add(Calendar.DATE, -1)
Calendar.add(Calendar.DATE, 1)
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