so web.xml takes prefernce ..does this what the above mean
public void sendError(int sc, java.lang.String msg)
throws IOException
Sends an error response to the client using the specified status clearing the buffer. The server defaults to creating the response to look like an HTML-for-matted server error page containing the specified message, setting the content type to “text/html”, leaving cookies and other headers unmodified. If an error-page declaration has been made for the web application corresponding
to the status code passed in, it will be served back in preference to the suggested msg parameter.
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If the response has already been committed, this method throws an Illegal-StateException.
After using this method, the response should be considered to be committed and should not be written to.
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Parameters:
sc - the error status code
msg - the descriptive message
Throws:
IOException - If an input or output exception occurs
IllegalStateException - If the response was committed