Java time

最新推荐文章于 2023-04-19 20:04:52 发布

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最新推荐文章于 2023-04-19 20:04:52 发布

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文章标签： java python 数据库

原文链接：https://my.oschina.net/huangchp/blog/1828112

2019独角兽企业重金招聘Python工程师标准>>>

LocalDate currentDate = LocalDate.now();
LocalDate beforeDate = currentDate.minusMonths(1);
LocalDate lastDayOfMonth = beforeDate.with(TemporalAdjusters.lastDayOfMonth());
String sunday = "SUNDAY";
String saturday = "SATURDAY";
if (lastDayOfMonth.getDayOfWeek().toString().equals(sunday)) {
    // 如果是周日，向前推两天
    lastDayOfMonth = lastDayOfMonth.minusDays(2);
} else if (lastDayOfMonth.getDayOfWeek().toString().equals(saturday)){
    // 如果是周六，向前推一天
    lastDayOfMonth = lastDayOfMonth.minusDays(1);
}
// 最后一个工作日日期
String lastDay = lastDayOfMonth.format(DateTimeFormatter.ofPattern("yyyyMMdd"));
// 当前日期
String currnetDay = currentDate.format(DateTimeFormatter.ofPattern("yyyyMMdd"));

LocalDate afterDate = LocalDate.of(2018, 1, 16);
LocalDate today = LocalDate.now();
System.out.println(afterDate);
System.out.println(today);
System.out.println(afterDate.isAfter(today));
LocalDate currentDate = LocalDate.now();
System.out.println(currentDate.minusDays(1));
System.out.println("-------------------------");
LocalDate beforeDate = currentDate.minusMonths(1);
LocalDate lastDayOfMonth = beforeDate.with(TemporalAdjusters.lastDayOfMonth());
String dayOfWeek = lastDayOfMonth.getDayOfWeek().toString();
System.out.println("当前时间：" + currentDate);
System.out.println("上个月的今天：" + beforeDate);
System.out.println("上个月的最后一天：" + lastDayOfMonth);
System.out.println("上个月的最后一天是星期几：" + dayOfWeek);
System.out.println("上个月的最后一天的前一天：" + lastDayOfMonth.minusDays(1));
System.out.println("上个月的最后一天的前两天：" + lastDayOfMonth.minusDays(2));
System.out.println("格式化后的日期：" + lastDayOfMonth.format(DateTimeFormatter.ofPattern("yyyyMMdd")));

LocalDate localDate = LocalDate.parse("20180202", DateTimeFormatter.BASIC_ISO_DATE);
String ld = localDate.plusMonths(3).format(DateTimeFormatter.BASIC_ISO_DATE);
System.out.println(ld);
String ld1 = localDate.minusMonths(3).format(DateTimeFormatter.BASIC_ISO_DATE);
System.out.println(ld1);
System.out.println("-----------");
LocalDate st = LocalDate.parse("20180101", DateTimeFormatter.BASIC_ISO_DATE);
LocalDate ed = LocalDate.parse("20180221", DateTimeFormatter.BASIC_ISO_DATE);
LocalDate af = st.plusMonths(3);
System.out.println(af);
System.out.println(st.compareTo(af));
System.out.println(af.compareTo(ed));

https://docs.oracle.com/javase/8/docs/api/java/time/package-summary.html

转载于:https://my.oschina.net/huangchp/blog/1828112