This tutorial contains description of extends attribute of page Directive.
extends Attribute :
This attribute specifies the super class of the JSP page's implementation servlet. It allows you to inherit a class that is super class of the class created by runtime compiling this JSP page. It is rarely used.
<%@ page extends="package.class" %>
By default HttpJspBase is the super class in translated servlet in Tomcat.
Suppose you want another super class in place of HttpJspBase then use extends.
<[email protected] language="java" extends="javax.servlet.http.HttpServlet"%>
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