Passing Runtime initialization parameters to a Servlet

Question

Hi all.
Plz.let me know, how do you pass runtime initialization parameters to a Servlet. Also, when do we need this approach. Thank You.

Answer 1

Global parameters that may change should be passed as parameters so that the servlet doesn't have to be recompiled to make the change.
Here a global parameter is used to store a timeOut value. This value is written to every web page to force the page to refresh.
<web-app>
    <servlet>
        <servlet-name>
            KioskServlet
        </servlet-name>
        <servlet-class>
            KioskServlet
        </servlet-class>
        <init-param>
            <!-- number of seconds of inactivity until timing out -->
            <!-- 300 = 5 minutes -->
            <param-name>timeoutValue</param-name>
            <param-value>300</param-value>
        </init-param>
     </servlet>
</webapp>