Java 中()方法的 DayOfWeek 示例

原文:https://www . geeksforgeeks . org/dayofweek-of-in-Java-in-method-with-examples/

java.time.DayOfWeek 的()方法的是 java 中的一个内置函数，它从一个 int 值返回 DayOfWeek 的一个实例。int 值的范围在 1(星期一)到 7(星期日)之间。

方法声明:

public static DayOfWeek of(int dayOfWeek)

语法:

DayOfWeek dayOfWeekObject = DayOfWeek.of(int dayOfWeek)

参数:该方法以 dayOfWeek 为参数，其中:

  • dayOfWeek–是从 1(星期一)到 7(星期日)的 int 值。
  • dayOfWeekObject–是 dayOfWeekObject 的一个实例。

返回值:函数返回 DayOfWeek 对象的一个实例。

以下程序说明了上述方法: 程序 1:

// Java Program Demonstrate of()
// method of DayOfWeek
import java.time.DayOfWeek;

class DayOfWeekExample {
    public static void main(String[] args)
    {
        // Getting an instance of DayOfWeek from int value
        DayOfWeek dayOfWeek = DayOfWeek.of(4);

        // Printing the day of the week
        // and its Int value
        System.out.println("Day of the Week - "
                           + dayOfWeek.name());
        System.out.println("Int Value of "
                           + dayOfWeek.name() + " - "
                           + dayOfWeek.getValue());
    }
}

Output:

Day of the Week - THURSDAY
Int Value of THURSDAY - 4

程序 2:

// Java Program Demonstrate of()
// method of DayOfWeek
import java.time.DayOfWeek;

class DayOfWeekExample {
    public static void main(String[] args)
    {
        // Getting an instance of DayOfWeek from int value
        DayOfWeek dayOfWeek = DayOfWeek.of(7);

        // Printing the day of the week
        // and its Int value
        System.out.println("Day of the Week - "
                           + dayOfWeek.name());
        System.out.println("Int Value of "
                           + dayOfWeek.name() + " - "
                           + dayOfWeek.getValue());
    }
}

Output:

Day of the Week - SUNDAY
Int Value of SUNDAY - 7

参考:T2【https://docs . Oracle . com/javase/8/docs/API/Java/time/dayofweek . html # of-int-

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