Friday 16 March 2018

How to use isValidMonthDay method of Year Class | Java 8 Date and Time


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

YearDemo.java

import java.time.Month;
import java.time.MonthDay;
import java.time.Year;

public class YearDemo
{

    public static void main(String[] args)
    {

        Year year = Year.of(2017);

        /*
         * Parameters:
         *
         * monthDay - the month-day to validate, null returns false
         *
         * Returns:
         *
         * true if the month and day are valid for this year
         */

        boolean isValidMonthDay = year
                .isValidMonthDay(MonthDay.of(Month.FEBRUARY, 1));
        System.out.println("isValidMonthDay = " + isValidMonthDay);

        isValidMonthDay = year.isValidMonthDay(MonthDay.of(Month.FEBRUARY, 30));
        System.out.println("isValidMonthDay = " + isValidMonthDay);

    }

}

Output

isValidMonthDay = true
Exception in thread "main" java.time.DateTimeException: Illegal value for DayOfMonth field, value 30 is not valid for month FEBRUARY
    at java.time.MonthDay.of(Unknown Source)
    at YearDemo.main(YearDemo.java:26)

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

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

Bitbucket Link:
https://bitbucket.org/ramram43210/java/src/8e3f14caa10b52912934997a22df069c728f47b4/BasicJava_2018/YearDemo_isValidMonthDay/?at=master

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