>>> Karl Doane <[EMAIL PROTECTED]> 9/7/99 12:19:03 PM >>>
>I have read that the dopost and doget method
>are thread safe since each thread has a copy of its own.
This is not quite true.
There are many threads but only one copy of each servlet.
Each thread does have it's own stack so local variables (created
within a method) are safe from other threads.
If a method (even doGet() or doPost()) creates class level variables,
either instance or static, access to those variables must be
synchronized (because more than one thread at a time might be running
the method that accesses them).
>My question is, if I create a local variable (a vector)
>to that method and then pass that variable off to
>another method which will write it to an output stream,
> can I safely use that variable in this method??
Yes. You can see from my statement above, the vector is local, so it
is within the stack of the individual thread.
You can make as many calls you like to diferent methods with
variables created locally.
As soon as you create or access a variable outside the scope of the
method however, you will have to synchronize access to it.
Hope this clears things up.
Nic Ferrier
Tapsell-Ferrier Limited
http://www.tapsellferrier.co.uk
"Use Ockham Luke"
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