Hi,
i am passing two values, A and B in the url as querystrings, when going
from one page to another.
So to retrieve the values i simply do request.getParameter("A") and
simillarly for B. When the first time i load the page i dont want to pass
the value for B.
What should i write in my code to check for the null value of B. I tried
doing request.getParameter("B")==null, but still while running i got a
nullPointerException.
how should i check for a null value of request.getParameter()
thanks.
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