WeekFields dayOfWeek() method in Java with Examples

Last Updated : 29 Jan, 2020

The dayOfWeek() method of WeekFields class is used to return a field to access the day of the week based on this WeekFields. For example, if the first day-of-week is Monday, then that will have the value 1, with other days ranging from Tuesday as 2 to Sunday as 7.

Syntax:

public TemporalField dayOfWeek()

Parameters: This method accepts nothing.

Return value: This method returns a field providing access to the day-of-week with localized numbering, not null.

Below programs illustrate the WeekFields.dayOfWeek() method:
Program 1:

// Java program to demonstrate 
// WeekFields.dayOfWeek() method 
  
import java.time.DayOfWeek; 
import java.time.LocalDate; 
import java.time.temporal.TemporalField; 
import java.time.temporal.WeekFields; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
  
        // create WeekFields 
        WeekFields weekFields 
            = WeekFields.of(DayOfWeek.MONDAY, 1); 
  
        // apply dayOfWeek() 
        TemporalField dayOfWeek 
            = weekFields.dayOfWeek(); 
  
        // create a LocalDate 
        LocalDate day = LocalDate.of(2021, 12, 21); 
  
        // get day of week for localdate 
        int dow = day.get(dayOfWeek); 
  
        // print results 
        System.out.println("day of week for "
                           + day + " :" + dow); 
    } 
} 

Output:

day of week for 2021-12-21 :2

Program 2:

// Java program to demonstrate 
// WeekFields.dayOfWeek() method 
  
import java.time.DayOfWeek; 
import java.time.LocalDate; 
import java.time.temporal.TemporalField; 
import java.time.temporal.WeekFields; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
  
        // create WeekFields 
        WeekFields weekFields 
            = WeekFields.of(DayOfWeek.SUNDAY, 1); 
  
        // apply dayOfWeek() 
        TemporalField dayOfWeek 
            = weekFields.dayOfWeek(); 
  
        // create a LocalDate 
        LocalDate day 
            = LocalDate.of(2018, 05, 31); 
  
        // get day of week for localdate 
        int dow = day.get(dayOfWeek); 
  
        // print results 
        System.out.println("day of week for "
                           + day + " :" + dow); 
    } 
} 