Sunday 10 June 2018

How to use minus and plus methods of DayOfWeek Enum | Java 8 Date and Time


Click here to watch on Youtube: 
https://www.youtube.com/watch?v=QRoVL_9BwU8&list=UUhwKlOVR041tngjerWxVccw

DayOfWeekDemo1.java

import java.time.DayOfWeek;

public class DayOfWeekDemo1
{
    public static void main(String[] args)
    {
        DayOfWeek dayOfWeek = DayOfWeek.of(5);
        System.out.println("dayOfWeek = " + dayOfWeek);

        /*
         * Parameters:
         *
         * days - the days to subtract, positive or negative
         *
         * Returns:
         *
         * the resulting day-of-week, not null
         */

        dayOfWeek = dayOfWeek.minus(2);
        System.out.println("dayOfWeek = " + dayOfWeek);
    }

}

Output

dayOfWeek = FRIDAY
dayOfWeek = WEDNESDAY

DayOfWeekDemo2.java

import java.time.DayOfWeek;

public class DayOfWeekDemo2
{
    public static void main(String[] args)
    {

        DayOfWeek dayOfWeek = DayOfWeek.of(5);
        System.out.println("dayOfWeek = " + dayOfWeek);

        /*
         * Parameters:
         *
         * days - the days to add, positive or negative
         *
         * Returns:
         *
         * the resulting day-of-week, not null
         */

        dayOfWeek = dayOfWeek.plus(1);
        System.out.println("dayOfWeek = " + dayOfWeek);

    }

}

Output

dayOfWeek = FRIDAY
dayOfWeek = SATURDAY

Click the below link to download the code:
https://sites.google.com/site/ramj2eev2/java_basics/DayOfWeekDemo_minus_plus.zip?attredirects=0&d=1

Github Link:
https://github.com/ramram43210/Java/tree/master/BasicJava_2018/DayOfWeekDemo_minus_plus

Bitbucket Link:
https://bitbucket.org/ramram43210/java/src/23d89f367bac9ed4230eafe0abaf49c0a80cc445/BasicJava_2018/DayOfWeekDemo_minus_plus/?at=master

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