Just like any other interface child classes inherit it from their parent.
You can remove the "implements Serializable" from all Number subclasses.
They're already Serializable since their parent class is.
David
--- Gary Gregory <[EMAIL PROTECTED]> wrote:
> Hello,
>
> I see that java.lang.Number declares java.io.Serializable. Number
> subclasses in java.lang do not but each of our Mutable number classes
> does. This does not seem necessary. Am I missing something? Can we
> remove these extra declarations?
>
> Gary
>
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