A convenient, but not complete, reference for JSPs TableOfContents
Includes
Include directive
<%@ include file="filename.jspf" %>
includes jsp fragment textually at translation (to servlet) time.
Include action
<jsp:include page="page.jsp" flush="true" />
dynamically includes at runtime.
JSTL import
<c:import url="./copyright.html"/> <c:import url="http://www.somewhere.com/hello.xml"/>
dynamically includes from anywhere at runtime.