Java 中的 DayOfWeek getValue()方法，带示例
原文:https://www . geesforgeks . org/dayofweek-getvalue-method-in-Java-with-examples/
java.time.DayOfWeek 的 getValue() 方法是 java 中的内置函数，返回分配给一周 7 天的整数值，即周一、周二、周三、周四、周五、周六和周日。int 值遵循 ISO-8601 标准，从 1(星期一)到 7(星期日)。
方法声明:
public int getValue()
语法:
int val = DayOfWeekObject.getValue()
参数:该方法不接受任何参数。
返回值:函数返回一周中某一天的 int 值，例如，1 代表星期一，2 代表星期二，以此类推。
下面程序举例说明上面的方法: 程序一:
// Java Program Demonstrate getValue()
// method of DayOfWeek
import java.time.*;
import java.time.DayOfWeek;
class DayOfWeekExample {
public static void main(String[] args)
{
// Set a local date whose day is found
LocalDate localDate
= LocalDate.of(1947,
Month.AUGUST, 15);
// Find the day from the local date
DayOfWeek dayOfWeek
= DayOfWeek.from(localDate);
// Printing the day of the week
// and its Int value
System.out.println("Day of the Week on"
+ " 15th August 1947 - "
+ dayOfWeek.name());
int val = dayOfWeek.getValue();
System.out.println("Int Value of "
+ dayOfWeek.name()
+ " - " + val);
}
}
Output:
Day of the Week on 15th August 1947 - FRIDAY
Int Value of FRIDAY - 5
程序 2:
// Java Program Demonstrate getValue()
// method of DayOfWeek
import java.time.*;
import java.time.DayOfWeek;
class DayOfWeekExample {
public static void main(String[] args)
{
// Set a local date whose day is found
LocalDate localDate
= LocalDate.of(2015,
Month.JULY, 13);
// Find the day from the local date
DayOfWeek dayOfWeek
= DayOfWeek.from(localDate);
// Printing the day of the week
// and its Int value
System.out.println("Day of the Week on"
+ " 13th July 2015 - "
+ dayOfWeek.name());
int val = dayOfWeek.getValue();
System.out.println("Int Value of "
+ dayOfWeek.name()
+ " - " + val);
}
}
Output:
Day of the Week on 13th July 2015 - MONDAY
Int Value of MONDAY - 1
参考:https://docs . Oracle . com/javase/8/docs/API/Java/time/dayofweek . html # getValue–
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