Thanx for enlightening :-)

Now, when do you actually intend to serialize servlets? :-)

Leon

On 1/5/07, fausto mancini <fausto.mancini@(protected):
> From Serializable interface javadoc:
>
> The serialization runtime associates with each serializable class a
> version number, called a serialVersionUID, which is used during
> deserialization to verify that the sender and receiver of a serialized
> object have loaded classes for that object that are compatible with
> respect to serialization. If the receiver has loaded a class for the
> object that has a different serialVersionUID than that of the
> corresponding sender's class, then deserialization will result in an
> InvalidClassException. A serializable class can declare its own
> serialVersionUID explicitly by declaring a field named
> "serialVersionUID" that must be static, final, and of type long:
>
>  ANY-ACCESS-MODIFIER static final long serialVersionUID = 42L;
>
>
> If a serializable class does not explicitly declare a serialVersionUID,
> then the serialization runtime will calculate a default serialVersionUID
> value for that class based on various aspects of the class, as described
> in the Java(TM) Object Serialization Specification. However, it is
> strongly recommended that all serializable classes explicitly declare
> serialVersionUID values, since the default serialVersionUID computation
> is highly sensitive to class details that may vary depending on compiler
> implementations, and can thus result in unexpected
> InvalidClassExceptions during deserialization. Therefore, to guarantee a
> consistent serialVersionUID value across different java compiler
> implementations, a serializable class must declare an explicit
> serialVersionUID value. It is also strongly advised that explicit
> serialVersionUID declarations use the private modifier where possible,
> since such declarations apply only to the immediately declaring
> class--serialVersionUID fields are not useful as inherited members.
>
> Leon Rosenberg wrote:
> > Hi Antonio,
> >
> > looking at your example app I have a rather side-question:
> > Why do you add serialUid to your servlets?
> >
> > public class WindowScopeTestServlet extends HttpServlet {
> >
> >     /**
> >      *
> >      */
> >     private static final long serialVersionUID = 8996558090818213997L;
> > ...
> > Leon
> >
> > On 1/5/07, Antonio Petrelli <apetrelli@(protected):
> >> Leon Rosenberg ha scritto:
> >> > If you want to start a project which performs a better (or more
> >> > powerful) attribute management than struts does, feel free to do this
> >> > on java.net or sourceforge (I'd even conribute some code :-)) but
> >> > don't expect it to become a part of struts anytime.
> >>
> >> Err... maybe it already exists :-)
> >>
> >> http://scopes.sourceforge.net/
> >>
> >> Ciao
> >> Antonio
> >>
> >>
> >> ---------------------------------------------------------------------
> >> To unsubscribe, e-mail: user-unsubscribe@(protected)
> >> For additional commands, e-mail: user-help@(protected)
> >>
> >>
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: user-unsubscribe@(protected)
> > For additional commands, e-mail: user-help@(protected)
> >
> >
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: user-unsubscribe@(protected)
> For additional commands, e-mail: user-help@(protected)
>
>

---------------------------------------------------------------------
To unsubscribe, e-mail: user-unsubscribe@(protected)
For additional commands, e-mail: user-help@(protected)