Hi Kevin :-)
Thanks for your email :-) I agree with your email, but I didn't
explain it clearly in my last email, because my English is
not good :-) :-)
And sorry for bothering you :-) I want to ask a question :-)
Did you know the "mechanism" of the servlet engine which will
use "instance pool"? -- if threadA is made by insatanceA, and
threadB is made by insatanceB, then:
* Do threadA and threadB "share" "static class variable" ?
I guess Yes :-) , because insatanceA and insatanceB are
"from" the same class , but I want to make sure :-)
* Do threadA and threadB "share" "not_static class variable" ?
I guess Not from the "theory" :-), but I also want to make sure :-)
Thanks in advance!
Bo
Oct.12, 2000
Kevin Mukhar wrote:
> Bo Xu wrote:
> >
> > a -- for "static class variable"
> > [a] all the "static class variable" will be "shared" to all
> > new threads -- and to all "client reauestings" , this is
> > because now we have only one "custom servlet
> > class" .
>
> No. Static class variables are shared because that is what static means,
> not because you only have one custom servlet class.
>
> >From the Java Language Spec
> (http://java.sun.com/docs/books/jls/html/8.doc.html#37544): "If a field
> is declared static, there exists exactly one incarnation of the field,
> no matter how many instances (possibly zero) of the class may eventually
> be created. A static field, sometimes called a class variable, is
> incarnated when the class is initialized"
>
> K Mukhar
>
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