null pointer exception while trying to forward request

[Ramesh Chakravarthy.panchakarla]

Hi Folks,
        I have got null pointer exception while trying to forward request to
another servlet using RequestDispatcher. The code snippet and the exception
is as follows.
        String url="http://localhost/servlet/AccountBalance?cust_id=1234":
        RequestDispatcher rd = context.getRequestDispatcher("url");
        rd.forward(request,response);
        while trying to execute the above code I am getting null pointer
exception. If I change the url to...
        "/servlet/AccountBalance?cust_id=1234" or
"<http://localhost/servlet/AccountBalance>" its perfectly working without
any exceptions. Any ideas....
        Cheers,
        ramesh

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