> When reading the API, often times in the details, one
> will see a field labeled Since:
> followed by a version number.
> If Since: does not appear, may we assume the
> member being described has always been there?
>
> Thanx one and all.
In general, yes. But all it really means is whether or not the developer took care to include the @since javadoc tag or not. I wouldn't bet on it that no new methods/classes have been introduced and left off the @since tag.