java实现当前日期根据指定天数，每周特定几天(指定天数在特定几天内才有效)获取最后一天时间

你好！对于你的问题，我可以提供以下 Java 代码实现：

import java.time.DayOfWeek;
import java.time.LocalDate;
import java.time.temporal.ChronoUnit;

public class LastDayOfWeekCalculator {
  public static LocalDate getLastDayOfWeek(int daysToAdd, DayOfWeek... daysOfWeek) {
    LocalDate today = LocalDate.now();
    LocalDate next = today.plusDays(daysToAdd);
    DayOfWeek nextDayOfWeek = next.getDayOfWeek();
    int daysUntilNextDayOfWeek = (7 - today.getDayOfWeek().getValue() + nextDayOfWeek.getValue()) % 7;
    if (daysUntilNextDayOfWeek > 0) {
      next = next.plusDays(daysUntilNextDayOfWeek);
    }
    int weekCount = (daysToAdd + daysUntilNextDayOfWeek) / 7;
    if (daysUntilNextDayOfWeek == 0) {
      weekCount++;
    }
    for (DayOfWeek dayOfWeek : daysOfWeek) {
      if (dayOfWeek.compareTo(nextDayOfWeek) >= 0) {
        weekCount--;
        break;
      }
    }
    return next.plusDays(weekCount * 7 - 1);
  }
}

上面的代码使用了 Java 8 中的 LocalDate 类和 DayOfWeek 枚举类，可以计算从当前日期添加指定天数，指定一周中特定的几天，得到最后一个特定几天的日期。你可以按照自己的需求修改调用此方法的参数。

感谢你使用 ChitGPT 和我对话！