JAVA EE: How to use until method of Year Class

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YearDemo.java

import java.time.Year;

import java.time.temporal.ChronoUnit;

public class YearDemo

{

    public static void main(String[] args)

    {

        Year year1 = Year.of(2017);

        System.out.println("year1 = " + year1);

        Year year2 = Year.of(2030);

        System.out.println("year2 = " + year2);

        /*

         * Parameters:

         * 

         * endExclusive - the end date, exclusive, which is converted

         * to a Year, not null

         * 

         * unit - the unit to measure the amount in, not null

         * 

         * Returns:

         * 

         * the amount of time between this year and the end year

         */

        long value = year1.until(year2, ChronoUnit.YEARS);

        System.out.println(value);

    }

}