Java TemporalAdjusters 时间调节器

Myth丶恋晨 2024-05-06 23:19 56阅读 0赞

提供了非常多处理日期相关的函数：

![92822931ada64ee2b10e3ce5e1e59f7f.png][]

使用示例：

/**
         * JCccc
         * @param args
         */
        public static void main(String[] args) {
            DateTimeFormatter pattern = DateTimeFormatter.ofPattern("yyyy-MM-dd");
            LocalDateTime now = LocalDateTime.now();
            //获取当月第一天
            System.out.println("当月第一天：" + now.with(TemporalAdjusters.firstDayOfMonth()).format(pattern));
            //获取下月第一天
            System.out.println("下月第一天：" + now.with(TemporalAdjusters.firstDayOfNextMonth()).format(pattern));
            //获取明年第一天
            System.out.println("明年第一天：" + now.with(TemporalAdjusters.firstDayOfNextYear()).format(pattern));
            //获取本年第一天
            System.out.println("本年第一天：" + now.with(TemporalAdjusters.firstDayOfYear()).format(pattern));
            //获取当月最后一天
            System.out.println("当月最后一天：" + now.with(TemporalAdjusters.lastDayOfMonth()).format(pattern));
            //获取本年最后一天
            System.out.println("本年最后一天：" + now.with(TemporalAdjusters.lastDayOfYear()).format(pattern));
            //获取当月第三周星期五
            System.out.println("当月第三周星期五：" + now.with(TemporalAdjusters.dayOfWeekInMonth(3, DayOfWeek.FRIDAY)).format(pattern));
            //获取上周一
            System.out.println("上周一：" + now.with(TemporalAdjusters.previous(DayOfWeek.MONDAY)).format(pattern));
            //获取下周日
            System.out.println("下周日：" + now.with(TemporalAdjusters.next(DayOfWeek.SUNDAY)).format(pattern));
        }

效果：

![15368e6246a248c2a5c9a5784e4db945.png][]

[92822931ada64ee2b10e3ce5e1e59f7f.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/05/06/aad83dd4d47b4623b4e67a22ecd0805f.png
[15368e6246a248c2a5c9a5784e4db945.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/05/06/3783ddc123154d898bdd00207f68be28.png