JSTL not working while adding some parmaters in web.xml

JSTL not working after adding following lines to web.xml

    <servlet>
     <servlet-name>jsp</servlet-name>
     <servlet-class>org.apache.jasper.servlet.JspServlet</servlet-class>
     <init-param>
         <param-name>fork</param-name>
         <param-value>false</param-value>
     </init-param>
     <init-param>
         <param-name>xpoweredBy</param-name>
         <param-value>false</param-value> 
    </init-param>
    <init-param> 
        <param-name>mappedfile</param-name>
         <param-value>false</param-value>
    </init-param>
    <load-on-startup>3</load-on-startup>
 </servlet> 

It shows the following exception while moving to the jsp where jstl is included.

org.apache.jasper.JasperException: The absolute uri: http://ift.tt/QfKAz6 cannot be resolved in either web.xml or the jar files deployed with this application Although the jstl is at the class path. Also I dont want to remove the changes in web.xml