java日历类add方法

日历类setFirstDayOfWeek()方法 (Calendar Class setFirstDayOfWeek() method)

• setFirstDayOfWeek() method is available in java.util package.

  setFirstDayOfWeek()方法在java.util包中可用。

• setFirstDayOfWeek() method is used to sets the first day of the week.

  setFirstDayOfWeek()方法用于设置一周的第一天。

• setFirstDayOfWeek() method is a non-static method, it is accessible with the class object and if we try to access the method with the class name then we will get an error.

  setFirstDayOfWeek()方法是一种非静态方法，可通过类对象访问，如果尝试使用类名称访问该方法，则会收到错误消息。

• The return type of the method is void, it does not return anything.

  方法的返回类型为void ，它不返回任何内容。

• setFirstDayOfWeek() method accepts only one parameter is of int type.

  setFirstDayOfWeek()方法仅接受一个int类型的参数。

• setFirstDayOfWeek() method does not throw an exception at the time of set first day of the week.

  setFirstDayOfWeek()方法在设置一周的第一天时不会引发异常。

Syntax:

句法：

    public void setFirstDayOfWeek(int day);

Parameter(s):

参数：

• int day – represents the value of the first day of the week.

  int day –表示一周中第一天的值。

Return value:

返回值：

The return type of this method is void, it returns nothing.

此方法的返回类型为void ，不返回任何内容。

Example:

例：

// Java Program to demonstrate the example of
// void setFirstDayOfWeek(int day) method of Calendar
import java.util.*;
public class SetFirstDayOfWeek {
public static void main(String args[]) {
// Instantiating a Calendar object
Calendar ca = Calendar.getInstance();
System.out.println("ca: " + ca.getTime());
// By using setFirstDayOfWeek(int fi) method is to 
// set the first day of the week of this Calendar
ca.setFirstDayOfWeek(4);
// By using getFirstDayOfWeek() method is to
// return the first day of the week
int day = ca.getFirstDayOfWeek();
// Display First day of the week
System.out.println("ca.getFirstDayOfWeek(): " + day);
}
}

Output

输出量

ca: Sun Feb 02 08:15:19 GMT 2020
ca.getFirstDayOfWeek(): 4

翻译自: https://www.includehelp.com/java/calendar-setfirstdayofweek-method-with-example.aspx

java日历类add方法