Java LocalDateTime getDayOfWeek()用法及代碼示例

LocalDateTime類的getDayOfWeek()方法用於返回day-of-week字段，該字段是枚舉DayOfWeek。此方法返回day-of-week的枚舉DayOfWeek。

用法:

public DayOfWeek getDayOfWeek()

參數：此方法不接受任何參數。

返回值：此方法從枚舉DayOfWeek返回day-of-week。

以下示例程序旨在說明LocalDateTime.getDayOfWeek()方法：

示例1:

// Java program to demonstrate 
// LocalDateTime.getDayOfWeek() method 
  
import java.time.*; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
  
        // create a LocalDateTime Object 
        LocalDateTime local 
            = LocalDateTime.parse("2018-12-03T12:39:10"); 
  
        // get dayofweek for this LocalDateTime 
        DayOfWeek dayofweek 
            = local.getDayOfWeek(); 
  
        // print result 
        System.out.println("Day of Week: "
                           + dayofweek); 
    } 
}

輸出：

Day of Week: MONDAY

示例2:

// Java program to demonstrate 
// LocalDateTime.getDayOfWeek() method 
  
import java.time.*; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
  
        // create a LocalDateTime Object 
        LocalDateTime local 
            = LocalDateTime.parse("2018-12-29T02:39:10"); 
  
        // get dayofweek for this LocalDateTime 
        DayOfWeek dayofweek = local.getDayOfWeek(); 
  
        // print result 
        System.out.println("Day of Week: "
                           + dayofweek); 
    } 
}

輸出：

Day of Week: SATURDAY

參考：https://docs.oracle.com/javase/10/docs/api/java/time/LocalDateTime.html#getDayOfWeek()

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