Question

Actually my java program like…

public class Schedule {
    public static enum RepeatType {
        DAILY, WEEKLY, MONTHLY;
    }

    public static enum WeekdayType {
        MONDAY(Calendar.MONDAY), TUESDAY(Calendar.TUESDAY), 
        WEDNESDAY(Calendar.WEDNESDAY), THURSDAY(Calendar.THURSDAY),
        FRIDAY(Calendar.FRIDAY), SATURDAY(Calendar.SATURDAY), SUNDAY(Calendar.SUNDAY);

        private int day;

        private WeekdayType(int day) {
            this.day = day;
        }

        public static List<Date> generateSchedule(RepeatType repeatType,List<WeekdayType> repeatDays) {
            // ...
            // here some logic i wrote
        }
    }
}

And i’m calling the method into my Business class like following…

@RemotingInclude
public void createEvent(TimetableVO timetableVO) {
    if ("repeatDays".equals(timetableVO.getSearchKey())) {
        List<Date> repeatDaysList = Schedule.generateSchedule(timetableVO.getRepeatType() , timetableVO.getRepeatDays());
    }
}

And Finally TimetableVO is

@Entity
@Table(name="EC_TIMETABLE")
public class TimetableVO extends AbstractVO {
    // ...
    private RepeatType repeatType;

    // But in this case the method generateSchedule(-,-) was not calling.
    private List<WeekdayType> repeatDays;
    // ... 
}

So my Question is Which one is Better Statement in the Following…

 private List<WeekdayType> repeatDays;

(or)

 // If we give like this `How to Convert Enum type to String` because generateSchedule() method taking enum type value....
 private String repeatDays; 

Answer 1

The value of any enumerated type can be converted to a String using the toString() method. You might not have realized (I didn’t at first) that if you declare a RepeatType variable r1, then r1 can be converted to a String using the toString() method E.G. r1.toString()

This Program:

public class Main {

    /** Creates a new instance of Main */
    public Main() {
    }

    public static enum RepeatType {
        DAILY, WEEKLY, MONTHLY;
    }    

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        RepeatType r1;
        r1 = RepeatType.DAILY;
        System.out.printf("R1 VALUE: %s\n", r1.toString());

        r1 = RepeatType.WEEKLY;
        System.out.printf("R1 VALUE: %s\n", r1.toString());

        r1 = RepeatType.MONTHLY;
        System.out.printf("R1 VALUE: %s\n", r1.toString());


    }

}

Will Output the actual Enum Values as Follows:

R1 VALUE: DAILY
R1 VALUE: WEEKLY
R1 VALUE: MONTHLY