public static void switchTest(Enum obj) {
        // Add your code here
        String s = obj.getClass().getSimpleName();

        switch(s){
            case "E1":
                System.out.println(String.format("It's %s.%s", s, obj.name()));
                break;
            case "E2":
                System.out.println(String.format("It's %s.%s", s, obj.name()));
                break;
            default:
                System.out.println("undefined");
        }

    }