The setFirstDayOfWeek(int day_val) method in Calendar class is used to set the first day of the week using the day_val in this Calendar.
Syntax:
public void set(int day_val)
Parameters: The method takes one parameter day_val of integer type and refers to the first day of the week.
Return Value: The method does not return any value.
Below programs illustrate the working of setFirstDayOfWeek() Method of Calendar class:
Example 1:
// Java code to illustrate// setFirstDayOfWeek() method import java.util.*; public class Calendar_Demo { public static void main(String args[]) { // Creating calendar object Calendar calndr = Calendar.getInstance(); // Displaying first day of the week int first_day = calndr.getFirstDayOfWeek(); System.out.println("The Current" + " First day of the week: " + first_day); // Changing the first day of week calndr.setFirstDayOfWeek(Calendar.THURSDAY); // Displaying the alternate day first_day = calndr.getFirstDayOfWeek(); System.out.println("The new first" + " day of the week: " + first_day); }} |
Output:
The Current First day of the week: 1 The new first day of the week: 5
Example 2:
// Java code to illustrate// setFirstDayOfWeek() method import java.util.*;public class Calendar_Demo { public static void main(String args[]) { // Creating calendar object Calendar calndr = new GregorianCalendar(2018, 6, 10); // Displaying first day of the week int first_day = calndr.getFirstDayOfWeek(); System.out.println("The" + " First day of the week: " + first_day); // Changing the first day of week calndr.setFirstDayOfWeek(Calendar.MONDAY); // Displaying the alternate day first_day = calndr.getFirstDayOfWeek(); System.out.println("The new first" + " day of the week: " + first_day); }} |
Output:
The First day of the week: 1 The new first day of the week: 2
Reference: https://docs.oracle.com/javase/8/docs/api/java/util/Calendar.html#setFirstDayOfWeek-int-
