next和nextOrSame,previous和previousOrSame区别
今天是星期五,2020-06-19调用nextOrSame和previousOrSame返回都是今天,2020-06-19调用previous,返回2020-06-12调用next,返回2020-06-26//上个星期五的日期 如果今天是星期五,则返回下周五的日期LocalDate previousSaturdayInThisMonth = today.with(TemporalAdjusters.previous(DayOfWeek.FRIDAY));//(往前包括当天.