%@ taglib uri="http://java.sun.com/jstl/core" prefix="c" %>
<%
Double db= (Double) (Math.random() * 20);
pageContext.setAttribute("random", db, PageContext.PAGE_SCOPE);
%>
The c:catch action
It will show the random number generated over which the decide whether the exception has been occured or not.
The number is :
Exception occurs at. ${random}
No Exception at . ${random}