Re: PRIVATE VARIABLES WITHIN PUBLIC CLASS

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No private is an access modifier, not a replication or synchronization
keyword.  All that it means is that only the specific class can access the
data (not the specific instance).  You have to remember that Servlets use a
single instance of your servlet class to serve all the requests that come
in.  Often those requests will come in at the same time and you'll have
multiple threads running through a single instance of your servlet.
Anything on the stack (i.e. method local variables and  arguments) are
inherently threadsafe, anything else you must explicitly synchronize
yourself.
  (*Chris*)

On 2/6/06, vcragain <[email protected]> wrote:
>
> Hi -
> Can someone please de-confuse me - If I have a public servlet class, with
> ONLY private variables, how could the data get overlaid - isnt private
> data
> supposed to be owned by the specific object ONLY ?
> Since we just invoke the servlet via the html - is there only 1 instance
> of
> the code ie 1 object invoked...therefore whoever he is referenced by last=
,
> owns his data ?
>
>
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No private is an access modifier, not a replication or synchronization keyw=
ord.&nbsp; All that it means is that only the specific class can access the=
 data (not the specific instance).&nbsp; You have to remember that Servlets=
 use a single instance of your servlet class to serve all the requests that=
 come in.&nbsp; Often those requests will come in at the same time and you'=
ll have multiple threads running through a single instance of your servlet.=
&nbsp; Anything on the stack (
i.e. method local variables and&nbsp; arguments) are inherently threadsafe,=
 anything else you must explicitly synchronize yourself.<br>&nbsp; (*Chris*=
)<br><br><div><span class=3D"gmail_quote">On 2/6/06, <b class=3D"gmail_send=
ername">vcragain
</b> &lt;<a href=3D"mailto:[email protected]">[email protected]</a>&gt; w=
rote:</span><blockquote class=3D"gmail_quote" style=3D"border-left: 1px sol=
id rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Hi -<=
br>
Can someone please de-confuse me - If I have a public servlet class, with<b=
r>ONLY private variables, how could the data get overlaid - isnt private da=
ta<br>supposed to be owned by the specific object ONLY ?<br>Since we just i=
nvoke the servlet via the html - is there only 1 instance of
<br>the code ie 1 object invoked...therefore whoever he is referenced by la=
st,<br>owns his data ?<br><br>_____________________________________________=
______________________________<br>To unsubscribe, send email to <a href=3D"=
mailto:[email protected]">
[email protected]</a> and include in the body<br>of the message &quot;s=
ignoff SERVLET-INTEREST&quot;.<br><br>Archives: <a href=3D"http://archives.=
java.sun.com/archives/servlet-interest.html">http://archives.java.sun.com/a=
rchives/servlet-interest.html
</a><br>Resources: <a href=3D"http://java.sun.com/products/servlet/external=
-resources.html">http://java.sun.com/products/servlet/external-resources.ht=
ml</a><br>LISTSERV Help: <a href=3D"http://www.lsoft.com/manuals/user/user.=
html">
http://www.lsoft.com/manuals/user/user.html</a><br></blockquote></div><br>
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<p>

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