Java Calendar getFirstDayOfWeek() Method

The getFirstDayOfWeek() method of java.util.Calendar.getFirstDayOfWeek() class. It returns first day of week in integer form. i.e. corresponding integer value of DAY Field. No parameter is passed to getFirstDayOfWeek() method.

Syntax

Parameter

No parameter is passed.

Returns

Returns the first day of the week in integer form.

Throws

Does not throw an exception.

Example 1

import java.util.Calendar;
public class JavaCalendargetFirstDayOfWeekExample1 {
	public static void main(String[] args) {
		Calendar calobj = Calendar.getInstance(); 
		System.out.println("first day of current week:"
				+ calobj.getFirstDayOfWeek());
                
                calobj.add(Calendar.YEAR, 1996);
                 calobj.add(Calendar.MONTH, 9);
                  calobj.add(Calendar.DAY_OF_WEEK, 23);
                  
                  System.out.println("If date is  " + calobj.getTime() + "  then first day of week is  "
				+ calobj.getFirstDayOfWeek());
                
		calobj.setFirstDayOfWeek(Calendar.TUESDAY);
		System.out.println("now first day of week :" 
				+ calobj.getFirstDayOfWeek());
	}
}

Test it Now

Output:

first day of current week:1
If date is  Wed May 27 13:42:54 PDT 4015  then first day of week is  1
now first day of week :3

Example 2

import java.util.Calendar;
import java.util.Locale;
public class JavaCalendargetFirstDayOfWeekExample2 {  
public static void main(String[] args) {
    Calendar mycal = Calendar.getInstance(new Locale("us"));
    int first = mycal.getFirstDayOfWeek();
    System.out.println(" First Day Of week is :" + first );
    //cchecking if first day is monday or not
    if (first != Calendar.MONDAY) {
         System.out.println("First day of week should be monday !!");
    }

    Calendar mycal2 = Calendar.getInstance(new Locale("uk","UA"));
    int first2 = mycal2.getFirstDayOfWeek();
    if ( first2 == Calendar.MONDAY) {
        System.out.println(" in uk local  First day of week is Monday  !!");
    }
}
}

Test it Now

Output:

First Day Of week is :1
First day of week should be monday !!
 in uk local  First day of week is Monday  !!

Example 3

import java.util.Calendar;
public class JavaCalendargetFirstDayOfWeekExample3 {   
    public static void main(String[] args) {

      // create a new calendar 
      Calendar mycal = Calendar.getInstance();

      // print the first day of the week
      System.out.println("First day is :" + mycal.getFirstDayOfWeek());
      int firsD = mycal.getFirstDayOfWeek();
      switch (firsD) {
         case 1:
         case 2:
         case 3:
            System.out.println("First Day of Week can be following : Monday , Tuesday , Wednesday");
            break;
         case 4:
         case 5:  
         case 6:
            System.out.println("First Day of Week can be following : Thirsday , Friday , saturday");
            break;
         case 7:
            System.out.println("First Day is Sunday");
            break;
      }
   }  
}

Test it Now

Output:

First day is :1
First Day of Week can be following : Monday , Tuesday , Wednesday

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