Servlets and Threads

[Simon Harvey]

Hi everyone,
Is the only time I need to synchronise a method in a servlet, when that method accesses a global variable at the top of the servlet.
For example this Wouldnt need sync'd

public String getSomething(String nameFromOtherMethod){
     String greeting = "Hello";
     String name = nameFromOtherMethod;
     return greeting + nameFromOtherMethod;
}

I'm trying to figure out why most methods dont need to be synchronised. The only thing I can think of is if its only when they access global variables that things might go wrong.
Is it the case that most methods are ok, because when a context switch happens, the internal variables for the method are stored and reiniitalised for when the other thread comes back online
Thanks to anyone who can help
Simon

[Maulin Vasavada]

hi simon
yes. u r right in ur predictions. the methods using a local vars need not be synchronized. its only when we have a instance variables in the Servlet class which are used by methods as that variable will be shared for each thread spawned for the servlet.
tho, i have not used much of such instance vars in a servlet to avoid those synchronization issues BUT sometimes it might be "must" to have those and cope with synchronized issues.
regards
maulin