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:
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());    }} |
Output:
Day of the Week on 2015-07-13 - MONDAY
