java获取上周的周五

要获取上周的周五，可以使用Java的`java.util.Calendar`和`java.time.LocalDate`类。下面是一个示例代码：

import java.time.DayOfWeek;
import java.time.LocalDate;
import java.util.Calendar;

public class Main {
    public static void main(String[] args) {
        LocalDate now = LocalDate.now();
        LocalDate previousFriday = now.with(DayOfWeek.FRIDAY).minusWeeks(1);

        System.out.println("上周的周五是：" + previousFriday);
    }
}

这段代码首先使用`LocalDate.now()`获取当前日期，然后使用`with(DayOfWeek.FRIDAY)`将日期调整为当前周的周五，最后使用`minusWeeks(1)`将日期调整为上周的周五。输出结果即为上周的周五的日期。

相关问题

java如何获取上周的日期

你可以使用 Java 中的 `Calendar` 类来获取上周的日期。下面是一个获取上周日期的示例代码：

Calendar calendar = Calendar.getInstance();
calendar.add(Calendar.WEEK_OF_YEAR, -1);
Date lastWeekDate = calendar.getTime();

首先，我们获取当前日期时间的 `Calendar` 实例。然后，使用 `add` 方法将当前日期时间向前推一周，即减去一周的时间量。最后，使用 `getTime` 方法将 `Calendar` 实例转换为 `Date` 类型的日期。这样就可以获取到上周的日期了。

java 获取本周二到下周一日期 与获取明天日期与获取上周二到本周一日期

获取本周二到下周一日期的Java代码：

import java.time.DayOfWeek;
import java.time.LocalDate;

public class Main {
    public static void main(String[] args) {
        LocalDate date = LocalDate.now();
        LocalDate nextTuesday = date.with(DayOfWeek.TUESDAY);
        LocalDate nextMonday = date.with(DayOfWeek.MONDAY).plusWeeks(1);
        System.out.println("本周二到下周一日期：");
        System.out.println("周二：" + nextTuesday);
        System.out.println("周三：" + nextTuesday.plusDays(1));
        System.out.println("周四：" + nextTuesday.plusDays(2));
        System.out.println("周五：" + nextTuesday.plusDays(3));
        System.out.println("周六：" + nextTuesday.plusDays(4));
        System.out.println("周日：" + nextTuesday.plusDays(5));
        System.out.println("周一：" + nextMonday);
    }
}

获取明天日期的Java代码：

import java.time.LocalDate;

public class Main {
    public static void main(String[] args) {
        LocalDate tomorrow = LocalDate.now().plusDays(1);
        System.out.println("明天日期：" + tomorrow);
    }
}

获取上周二到本周一日期的Java代码：

import java.time.DayOfWeek;
import java.time.LocalDate;

public class Main {
    public static void main(String[] args) {
        LocalDate date = LocalDate.now();
        LocalDate lastTuesday = date.with(DayOfWeek.TUESDAY).minusWeeks(1);
        LocalDate lastMonday = date.with(DayOfWeek.MONDAY).minusWeeks(1);
        System.out.println("上周二到本周一日期：");
        System.out.println("上周二：" + lastTuesday);
        System.out.println("上周三：" + lastTuesday.plusDays(1));
        System.out.println("上周四：" + lastTuesday.plusDays(2));
        System.out.println("上周五：" + lastTuesday.plusDays(3));
        System.out.println("上周六：" + lastTuesday.plusDays(4));
        System.out.println("上周日：" + lastTuesday.plusDays(5));
        System.out.println("本周一：" + lastMonday);
    }
}