Java WeekFields getFirstDayOfWeek()用法及代碼示例

WeekFields類的getFirstDayOfWeek()方法用於將第一個day-of-week作為DayOfWeek枚舉返回，例如，美國使用星期日，而法國使用星期一。

用法:

public DayOfWeek getFirstDayOfWeek()

參數：此方法不接受任何內容。

返回值：此方法返回第一個day-of-week，不為null。

以下示例程序旨在說明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); 
    } 
}

輸出：

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); 
    } 
}

輸出：

First Day:SUNDAY

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

相關用法

注：本文由純淨天空篩選整理自AmanSingh2210大神的英文原創作品 WeekFields getFirstDayOfWeek() method in Java with Examples。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。