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Java Date Time - DayOfWeek Examples

Java Date Time Java 


Enum DayOfWeek represents days of the week. It doesn't implement Temporal interface so it's not temporal-based. It doesn't represent a point on a timeline. It implements TemporalAccessor and TemporalAdjuster.


Examples


import java.time.DayOfWeek;
import java.time.format.TextStyle;
import java.util.Locale;

public class DayOfWeekExample {
    public static void main (String[] args) {
        //using a day
        DayOfWeek d = DayOfWeek.SATURDAY;
        System.out.println(d);
        System.out.println(d.getValue());
        System.out.println(d.getDisplayName(TextStyle.FULL, Locale.FRANCE));
        //there's no method DayOfWeek.now()
        // because it's not temporal-based


        //subtracting
        DayOfWeek d2 = d.minus(2);
        System.out.println(d2);
        //adding
        DayOfWeek d3 = d.plus(2);
        System.out.println(d3);

        //from an int value 1 to 7
        System.out.printf("Day starts from %s and ends with %s%n",
                            DayOfWeek.of(1),
                            DayOfWeek.of(7));
    }
}

Output

SATURDAY
6
samedi
THURSDAY
MONDAY
Day starts from MONDAY and ends with SUNDAY




Getting DayOfWeek from other Temporal objects. 

import java.time.DayOfWeek;
import java.time.LocalDate;
import java.time.temporal.ChronoField;

public class DayOfWeekFromOtherDates {
    public static void main (String[] args) {
        DayOfWeek d = LocalDate.now().getDayOfWeek();
        System.out.println(d);

        int i = LocalDate.of(1999, 12, 31).get(ChronoField.DAY_OF_WEEK);
        System.out.println(i);

        DayOfWeek d2 = DayOfWeek.of(i);
        System.out.println(d2);

        /* similarly we can use other temporal objects:
               LocalDateTime#getDayOfWeek();
               ZonedDateTime#getDayOfWeek(); etc*/
    }
}

Output

MONDAY
5
FRIDAY

See Also