Answer Posted / sushila
while writing the sendRedirect, control is going back to
browser and browser is making request for target url. result
is not storing to any where, simply control is going to new
request. at that time parameter and argument is nullify.
so result is not available to new request. we can achieve
parameter values and arguments value through query stream.
basically sendRedirect is used for across the application
but within the same server.
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