re">public abstract&nbsp;void&nbsp;service&#8203;(<a href="ServletRequest.html" title="interface in jakarta.servlet">ServletRequest</a>&nbsp;req,
                             <a href="ServletResponse.html" title="interface in jakarta.servlet">ServletResponse</a>&nbsp;res)
                      throws <a href="ServletException.html" title="class in jakarta.servlet">ServletException</a>,
                             <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/io/IOException.html