Java中的 WeekFields getMinimalDaysInFirstWeek() 方法及示例

WeekFields 类的getMinimalDaysInFirstWeek()方法用于返回一个月或一年第一周的最少天数。例如，ISO-8601 要求在计算第一周之前存在 4 天（超过半周）。此方法返回一个月或一年第一周的最小天数，从 1 到 7。

句法：

public int getMinimalDaysInFirstWeek()

参数：此方法不接受任何内容。

返回值：该方法返回一个月或一年第一周的最小天数，从 1 到 7。

下面的程序说明了 WeekFields.getMinimalDaysInFirstWeek() 方法：
方案一：

// Java program to demonstrate
// WeekFields.getMinimalDaysInFirstWeek() method
  
import java.time.DayOfWeek;
import java.time.temporal.WeekFields;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // create WeekFields
        WeekFields weekFields
            = WeekFields.of(DayOfWeek.SATURDAY, 2);
  
        // apply getMinimalDaysInFirstWeek()
        int noOfDays
            = weekFields.getMinimalDaysInFirstWeek();
  
        // print results
        System.out.println("Minimal number of days"
                           + " in the first week: "
                           + noOfDays);
    }
}

输出：

Minimal number of days in the first week: 2

方案二：

// Java program to demonstrate
// WeekFields.getMinimalDaysInFirstWeek() method
  
import java.time.temporal.WeekFields;
import java.util.Locale;
  
public class GFG {
    public static void main(String[] args)
    {
  
        Locale locale = new Locale("EN", "INDIA");
  
        // create WeekFields
        WeekFields weekFields
            = WeekFields.of(locale);
  
        // apply getMinimalDaysInFirstWeek()
        int noOfDays
            = weekFields.getMinimalDaysInFirstWeek();
  
        // print results
        System.out.println("Minimal number of days"
                           + " in the first week: "
                           + noOfDays);
    }
}

输出：

Minimal number of days in the first week: 1

参考资料：https: Java/time/temporal/WeekFields.html#getMinimalDaysInFirstWeek()