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Java DayOfWeek enum

In Java the DayOfWeek is an enum representing the 7 days of the week. In addition with the textual enum name, every day-of-week has an int value.

Java DayOfWeek enum declaration

Let's see the declaration of java.time.DayOfWeek.

     public enum DayOfWeek extends Enum<DayOfWeek> implements TemporalAccessor, TemporalAdjuster

    

Methods of Java DayOfWeek

Method	Description
int get(TemporalField field)	It is used to get the value of the specified field from this day-of-week as an int.
boolean isSupported(TemporalField field)	It is used to check if the specified field is supported.
DayOfWeek minus(long days)	It is used to return the day-of-week that is the specified number of days before this one.
DayOfWeek plus(long days)	It is used to return the day-of-week that is the specified number of days after this one.
static DayOfWeek of(int dayOfWeek)	It is used to obtain an instance of DayOfWeek from an int value.
static DayOfWeek[] values()	It is used to return an array containing the constants of this enum type, in the order they are declared.

Java DayOfWeek Example: get()

     import java.time.*;
import java.time.temporal.ChronoField;
public class DayOfWeekExample1 {
  public static void main(String[] args) {
    LocalDate localDate = LocalDate.of(2017, Month.JANUARY, 25);
    DayOfWeek dayOfWeek = DayOfWeek.from(localDate);
    System.out.println(dayOfWeek.get(ChronoField.DAY_OF_WEEK));
  }
}

    

Test it Now

Output:

Java DayOfWeek Example: of()

     import java.time.DayOfWeek;
public class DayOfWeekExample2 {
  public static void main(String[] args) {
    DayOfWeek day = DayOfWeek.of(5);
    System.out.println(day.name());
    System.out.println(day.ordinal());
    System.out.println(day.getValue());
  }
}

    

Test it Now

Output:

FRIDAY
4
5

Java DayOfWeek Example: plus()

     import java.time.*;
public class DayOfWeekExample3 {
  public static void main(String[] args) {
    LocalDate date = LocalDate.of(2017, Month.JANUARY, 31);
    DayOfWeek day = DayOfWeek.from(date);
    System.out.println(day.getValue());
    day = day.plus(3);
    System.out.println(day.getValue());
  }
}

    

Test it Now

Output:

2
5

Java DayOfWeek Example: minus()

     import java.time.*;
public class DayOfWeekExample4 {
  public static void main(String[] args) {
    LocalDate date = LocalDate.of(2017, Month.JANUARY, 31);
    DayOfWeek day = DayOfWeek.from(date);
    System.out.println(day.getValue());
    day = day.minus(3);
    System.out.println(day.getValue());
  }
}

    

Test it Now

Output: