This also depends if you mean final in the sense of an instance
variable or the class name.

public final static Singleton singleton = new Singleton();

or if you mean

public final class Singleton {

 // etc...
}


Two different JVM behaviors, what George is referring to is the second.
Hope this helps.

- Dan

On Apr 5, 2005 7:10 AM, George Maggessy <george.maggessy@(protected):
> As far as I know, declaring a class as a final one helps the jvm in the
> task of searching the hierarchy class tree, that is, it improves the
> application performance.
>
> Atte.,
> George Maggessy
>
> --- Original Message ---
>
>
> As far as I understand -
>
> Declaring a class FINAL means that class designer does not wants this class
> to be extendible, so this class cannot provide any additional functionality.
>
> Desiging a class Singleton indicates that at any instant of time there will
> be only one instance (one object) of this class.
>
> So by making a Singleton class Final -> means that there will be only one
> instance of this class which cannot be extended for adding new
> functionality.
>
> I wonder why will be a class declared FINAL if it has to be extended in
> functionality by other classes?
>
> Singleton and FINAL ar 2 different concept all together.
>
>
> Regards,
> Garima.
>
>
>
> On Apr 5, 2005 5:23 AM, Julia Liu <julialiu@(protected):
> >
> > If I declare Singleton class as final, How could I add new functioality
> > to the class? Thanks.
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > Julia Liu
> >
> > __________________________________________________
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