C++ 中的构造函数委托
c++server side programmingprogramming
对于每个月的最后一天，首先创建一个 List 集合，用于表示星期几 −
List<DayOfWeek>dayOfWeek = new ArrayList<>();
现在，获取 2019 年每个月最后一天的星期几，使用 withYear() 设置年份并使用 lastDayOfMonth() 和 getDayOfWeek 方法 −
for (Month m: Month.values()) {
DayOfWeek days = LocalDate.now().withYear(2019).with(m).with(TemporalAdjusters.lastDayOfMonth()).getDayOfWeek();
}
示例
import java.time.DayOfWeek;
import java.time.LocalDate;
import java.time.Month;
import java.time.temporal.TemporalAdjusters;
import java.util.ArrayList;
import java.util.List;
public class Demo {
public static void main(String[] argv) {
List<DayOfWeek>dayOfWeek = new ArrayList<>();
for (Month m: Month.values()) {
DayOfWeek days = LocalDate.now().withYear(2019).with(m).with(TemporalAdjusters.lastDayOfMonth()).getDayOfWeek();
dayOfWeek.add(days);
}
System.out.println("Last day of each month in 2019 = "+dayOfWeek);
}
}
输出
Last day of each month in 2019 = [THURSDAY, THURSDAY, SUNDAY, TUESDAY, FRIDAY, SUNDAY, WEDNESDAY, SATURDAY, MONDAY, THURSDAY, SATURDAY, TUESDAY]
