public enum AdditionalEnum {
    One,
    Two,
    Three;

    public static AdditionalEnum FromInteger(int intValue)
    {
        switch(intValue)
        {
            case 1:
                return One;

            case 2:
                return Two;

            case 3:
                return Three;

            default:
                System.out.println("Error: incorrect value for enum");
                return null;
        }
    }
}