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Thread safety and cookie age question...
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Amitkumar Dhama
Ranch Hand
Joined: Feb 14, 2005
Posts: 56
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hi all following is the explanation given for a question. servlet implementing SingletTreadModel.
Three data elements are always thread-safe, they are:
1.Local variable
2.Request attribute
3.Session attribute
For instance variables, they are NOT safe unless the servlet is a SingleThreadModel servlet, which means there is only one thread accessing one instance at one moment.
For static/class variables, they are always NOT thread safe, even with SingleThreadModel marker.
I got this explanation in iris mock, is it correct?
coz, as far as I know session attributes are not thread safe�
Help me out in clearing this one�
and also please tell me if i'll set cookie age to -1 wgat will happen?
Thanking in advance�
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SCJP 1.4, SCWCD 1.4, M.Tech(CSE)
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Charith Fernando
Ranch Hand
Joined: Sep 12, 2005
Posts: 67
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according to my knowledge i agree with u with the part where session variables are not thread safe..
the only thread safe variables are request attributes and local variables...
for ur second problem relating to cookie age.. when u set it to -1 it lasts forever...
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Charith I Fernando<br />SCJP5, SCWCD, SCBCD, BSc(Hons) IS<br />+94 773 263 222 (mobile)
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Christophe Verré
Sheriff
Joined: Nov 24, 2005
Posts: 14672
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Moreover, setting the cookie age to a negative value will cause it to be deleted when the web browser exits (specs, setMaxAge)
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[My Blog]
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subject: Thread safety and cookie age question...
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