package demotest; import java.io.IOException;import java.util.Date; import javax.servlet.Filter; import javax.servlet.FilterChain; import javax.servlet.FilterConfig; import javax.servlet.ServletException; import javax.servlet.ServletRequest; import javax.servlet.ServletResponse; import Javax.servlet.http.HttpServletRequest;  public class GuruFilter implements Filter {        public void doFilter(ServletRequest request, ServletResponse response, Filterchain chain) throws IOException, ServletException {        // TODO Auto-generated method stub         HttpServletRequest req = (HttpServletRequest) request;                        String ipAddress = req.getRemoteAddr();         System.out.println("IP Address "+ipAddress + ", Time is"                             + new Date().toString());                // pass the request along the filter chain         chain.doFilter(request, response);    }        /**    * @see Filter#init(FilterConfig)    */     public void init(FilterConfig fConfig) throws ServletException {    String guruparam = fConfig.getInitParameter("guru-param");        //Print the init parameter     System.out.println("Test Param: " + guruparam);    }}