java获取当前日期所在周的 周一 周二周三周四周五周六周日

您可以使用Java中的Calendar类来实现获取当前日期所在周的周一、周二、周三、周四、周五、周六和周日的操作。具体代码如下：

import java.util.Calendar;

public class GetWeekdays {

    public static void main(String[] args) {
        Calendar calendar = Calendar.getInstance();
        int dayOfWeek = calendar.get(Calendar.DAY_OF_WEEK);
        int days = 0;
        switch (dayOfWeek) {
            case Calendar.MONDAY:
                days = 0;
                break;
            case Calendar.TUESDAY:
                days = -1;
                break;
            case Calendar.WEDNESDAY:
                days = -2;
                break;
            case Calendar.THURSDAY:
                days = -3;
                break;
            case Calendar.FRIDAY:
                days = -4;
                break;
            case Calendar.SATURDAY:
                days = -5;
                break;
            case Calendar.SUNDAY:
                days = -6;
                break;
        }
        calendar.add(Calendar.DAY_OF_WEEK, days);
        System.out.println("周一：" + calendar.getTime());
        calendar.add(Calendar.DAY_OF_WEEK, 1);
        System.out.println("周二：" + calendar.getTime());
        calendar.add(Calendar.DAY_OF_WEEK, 1);
        System.out.println("周三：" + calendar.getTime());
        calendar.add(Calendar.DAY_OF_WEEK, 1);
        System.out.println("周四：" + calendar.getTime());
        calendar.add(Calendar.DAY_OF_WEEK, 1);
        System.out.println("周五：" + calendar.getTime());
        calendar.add(Calendar.DAY_OF_WEEK, 1);
        System.out.println("周六：" + calendar.getTime());
        calendar.add(Calendar.DAY_OF_WEEK, 1);
        System.out.println("周日：" + calendar.getTime());
    }
}

输出结果如下：

周一：Mon Sep 06 15:23:39 CST 2021
周二：Tue Sep 07 15:23:39 CST 2021
周三：Wed Sep 08 15:23:39 CST 2021
周四：Thu Sep 09 15:23:39 CST 2021
周五：Fri Sep 10 15:23:39 CST 2021
周六：Sat Sep 11 15:23:39 CST 2021
周日：Sun Sep 12 15:23:39 CST 2021

希望能够帮助到您！