DayOfWeek from() method in Java with Examples

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The from() method of java.time.DayOfWeek is an in-built function in Java which takes a TemporalAccessor defining a date and returns an instance of DayOfWeek corresponding to that date. A TemporalAccessor represents an arbitrary set of date and time information, which this method converts to an instance of DayOfWeek corresponding to that date.

Method Declaration:

 public static DayOfWeek from(TemporalAccessor temporal)

Syntax:

 DayOfWeek dayOfWeekObject = DayOfWeek.from(TemporalAccessor temporal)

Parameters: This method takes temporal as parameter where:

temporal – is a TemporalAccessor which represents a date.

dayOfWeekObject – is an instance of DayOfWeek.

Return Value: The function returns an instance of DayOfWeek corresponding to the date specified by temporal

Below programs illustrate the above method:
Program 1:

// Java Program Demonstrate from()
// 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(1997, Month.AUGUST, 15);
  
        // Initialize a DayOfWeek object
        // with specified local Date
        DayOfWeek dayOfWeek
            = DayOfWeek.from(localDate);
  
        // Printing the day of the week
        System.out.println("Day of the Week on "
                           + localDate + " - "
                           + dayOfWeek.name());
    }
}

Output:

Day of the Week on 1997-08-15 - FRIDAY

Program 2:

// Java Program Demonstrate from()
// method of DayOfWeek
  
import java.time.*;
  
class DayOfWeekExample {
    public static void main(String[] args)
    {
        // Set a local date whose day is found
        LocalDate localDate
            = LocalDate.of(2015, Month.JULY, 13);
  
        // Initialize a DayOfWeek object
        // with specified local Date
        DayOfWeek dayOfWeek
            = DayOfWeek.from(localDate);
  
        // Printing the day of the week
        System.out.println("Day of the Week on "
                           + localDate + " - "
                           + dayOfWeek.name());
    }
}