FULL PRODUCT VERSION :


A DESCRIPTION OF THE PROBLEM :
The issue is that DayOfWeek is not taking in consideration the implementation already existing for many years in the "java.util.Calendar" class
 
     * SUNDAY = 1
     * MONDAY = 2
     * TUESDAY = 3
     * WEDNESDAY= 4
     * THURSDAY = 5
     * FRIDAY = 6
     * SATURDAY = 7

Where as DayOfWeek is considering different values:
    /**
     * The singleton instance for the day-of-week of Monday.
     * This has the numeric value of {@code 1}.
     */
    MONDAY,
    /**
     * The singleton instance for the day-of-week of Tuesday.
     * This has the numeric value of {@code 2}.
     */
    TUESDAY,
    /**
     * The singleton instance for the day-of-week of Wednesday.
     * This has the numeric value of {@code 3}.
     */
    WEDNESDAY,
    /**
     * The singleton instance for the day-of-week of Thursday.
     * This has the numeric value of {@code 4}.
     */
    THURSDAY,
    /**
     * The singleton instance for the day-of-week of Friday.
     * This has the numeric value of {@code 5}.
     */
    FRIDAY,
    /**
     * The singleton instance for the day-of-week of Saturday.
     * This has the numeric value of {@code 6}.
     */
    SATURDAY,
    /**
     * The singleton instance for the day-of-week of Sunday.
     * This has the numeric value of {@code 7}.
     */
    SUNDAY;

therefore this makes its use inconsistent.

Please Fix it ASAP!

Many thanks :)

Code:
package com.company;

import java.text.SimpleDateFormat;
import java.time.DayOfWeek;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.TimeZone;

public class Main {

    public static void main(String[] args) {


// write your code here
        Calendar myCalendar = Calendar.getInstance(TimeZone.getTimeZone("Europe/Paris"));
        myCalendar.setTime(new Date());
        int dayOfWeek = myCalendar.get(Calendar.DAY_OF_WEEK);
        System.out.println("dayOfWeek \t: " + DayOfWeek.of(dayOfWeek).name() );
    }
}

Output:
dayOfWeek : SATURDAY

REGRESSION. Last worked in version 8u121


REPRODUCIBILITY :
This bug can be reproduced always.