Java WeekFields getFirstDayOfWeek()用法及代码示例

WeekFields类的getFirstDayOfWeek()方法用于将第一个day-of-week作为DayOfWeek枚举返回，例如，美国使用星期日，而法国使用星期一。

用法:

public DayOfWeek getFirstDayOfWeek()

参数：此方法不接受任何内容。

返回值：此方法返回第一个day-of-week，不为null。

以下示例程序旨在说明WeekFields.getFirstDayOfWeek()方法：
程序1:

// Java program to demonstrate 
// WeekFields.getFirstDayOfWeek() 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.MONDAY, 1); 
  
        // apply getFirstDayOfWeek() 
        DayOfWeek firstDay 
            = weekFields.getFirstDayOfWeek(); 
  
        // print results 
        System.out.println("First Day:"
                           + firstDay); 
    } 
}

输出：

First Day:MONDAY

程序2:

// Java program to demonstrate 
// WeekFields.getFirstDayOfWeek() method 
  
import java.time.DayOfWeek; 
import java.time.temporal.WeekFields; 
import java.util.Locale; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
  
        Locale locale = new Locale("EN", "US"); 
  
        // create WeekFields 
        WeekFields weekFields 
            = WeekFields.of(locale); 
  
        // apply getFirstDayOfWeek() 
        DayOfWeek firstDay 
            = weekFields.getFirstDayOfWeek(); 
  
        // print results 
        System.out.println("First Day:"
                           + firstDay); 
    } 
}

输出：

First Day:SUNDAY

参考：https：//docs.oracle.com/javase/10/docs/api/java/time/temporal/WeekFields.html#getFirstDayOfWeek()

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注：本文由纯净天空筛选整理自AmanSingh2210大神的英文原创作品 WeekFields getFirstDayOfWeek() method in Java with Examples。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。