Can I specify ordinal for enum in Java?

Question

The ordinal() method returns the ordinal of an enum instance.
How can I set the ordinal for an enum?

Answer 1

You can update ordinal using reflection:

private void setEnumOrdinal(Enum object, int ordinal) {
    Field field;
    try {
        field = object.getClass().getSuperclass().getDeclaredField("ordinal");
        field.setAccessible(true);
        field.set(object, ordinal);
    } catch (Exception ex) {
        throw new RuntimeException("Can't update enum ordinal: " + ex);
    }
}