Re: Is Singleton thread safe?

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@yahoo.com> wrote:

If I declare Singleton class as final, How could I add new functioality

to the class? Thanks.

Julia Liu

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Re: Is Singleton thread safe?

George Maggessy

2005-04-05