IncYear、IncMonth、IncWeek、IncDay、IncHour、IncMinute、IncSecond、IncMilliSecond DateUtils.IncYear(); DateUtils.IncMonth(); DateUtils.IncWeek(); DateUtils.IncDay(); DateUtils.IncHour(); DateUtils.IncMinute(); DateUtils.IncSecond(); DateUtils.IncMilliSecond