enumExample4.java

class Day {
    public final static Day MONDAY = new Day();
    public final static Day TUESDAY = new Day();
    public final static Day WEDNESDAY = new Day();
}

class Month {
    public final static Month JANUARY = new Month();
    public final static Month FEBRUARY = new Month();
    public final static Month MARCH = new Month();
}

public class EnumExample4 {
    public static void main(String[] args) {

        // an compile error occurs at the if statement as we are trying to compare two different types
        if (Day.MONDAY == Month.JANUARY) {
            System.out.println("Both are same!");
        }

        Day day = Day.MONDAY;

        switch (day) {
            case Day.MONDAY:
                System.out.println("Mondays are bad");
                break;
            case Day.TUESDAY:
                System.out.println("Tuesdays are still bad");
                break;
            case Day.WEDNESDAY:
                System.out.println("Wednesdays are so-so");
                break;
        }
    }
}