Nine built-in objects of jsp
request ---------- request object
response ---------- response object
pageContext ----------jsp context object
session ---------- object
application ---------- ServletContext object
config ---------- ServletConfig object
out ----------jsp output stream object
page ----------points to the object of the current jsp
exception ---------- exception object
static include
Include is generally used at the bottom of the page (friendship links, about us, etc.)
<%@ include file="/include/footer.jsp"%>
dynamic include
<jsp:include page="/include/footer.jsp"></jsp:include>
ServletContextListener listener
