java 8 获取时间日期查询本周、本月、本季度、本年的第一天和最后一天-Toy模板网

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    public static void main(String[] args) {
        LocalDate nowDate = LocalDate.now();

        System.out.println("本年第一天:" + nowDate.with(TemporalAdjusters.firstDayOfYear()));
        System.out.println("本年最后一天:" + nowDate.with(TemporalAdjusters.lastDayOfYear()));

        // 本季度第一天
        int month = nowDate.getMonthValue();
        LocalDate firstDayOfQuarter;
        if (month <= 3) {
            firstDayOfQuarter = LocalDate.of(nowDate.getYear(), Month.JANUARY, 1);
        } else if (month <= 6) {
            firstDayOfQuarter = LocalDate.of(nowDate.getYear(), Month.APRIL, 1);
        } else if (month <= 9) {
            firstDayOfQuarter = LocalDate.of(nowDate.getYear(), Month.JULY, 1);
        } else {
            firstDayOfQuarter = LocalDate.of(nowDate.getYear(), Month.OCTOBER, 1);
        }
        System.out.println("本季度第一天:" + firstDayOfQuarter);
        System.out.println("本季度最后一天:" + nowDate.plusMonths(3 - nowDate.getMonthValue() % 3).with(TemporalAdjusters.lastDayOfMonth()));

        System.out.println("本月第一天:" + nowDate.with(TemporalAdjusters.firstDayOfMonth()));
        System.out.println("本月最后一天:" + nowDate.with(TemporalAdjusters.lastDayOfMonth()));
        
        // DayOfWeek可指定一周从星期几开始
        System.out.println("本周第一天:" + nowDate.with(DayOfWeek.MONDAY));
        System.out.println("本周最后一天:" + nowDate.with(DayOfWeek.SUNDAY));

    }

结果示例：

java 8 获取时间日期查询本周、本月、本季度、本年的第一天和最后一天文章来源地址https://www.toymoban.com/news/detail-513368.html