Components and Containers
The JavaServer Pages technology builds on the Servlet standard extension. JavaServer Pages 
is a Standard Extension that is defined extending the concepts in the Servlet Standard 
Extension. JSP 1.1 uses the classes from Java Servlet 2.2 specification. 
JSP pages and Servlet classes are collectively referred as 
Web Components
. JSP pages are 
delivered to a 
Container
 that provides the services indicated in the 
JSP Component Contract
.
JSP 1.1 and Servlet 2.2 rely only on features in the Java Runtime Environment 1.1, although 
they are compatible with, and can take advantage of, the Java 2 Runtime Environment.
1.3
Features in JSP 1.1
The JavaServer Pages specification includes:
Standard directives
Standard actions
Script language declarations, scriptlets and expressions
A portable tag extension mechanism.
Most of the integration of JSP pages within the J2EE platform is inherited from the reliance 
on the Servlet 2.2 specification.
1.4
Overview of JSP Page Semantics
This section provides an overview of the semantics of JSP pages
1.4.1
Translating and Executing JSP Pages
A 
JSP page
 is executed in a 
JSP container
, which is installed on a Web server, or on a Web 
enabled application server. The JSP container delivers 
requests
 from a client to a JSP page 
and 
responses
 from the JSP page to the client. The semantic model underlying JSP pages is 
that of a servlet: a JSP page describes how to create a response object from a request object 
for a given protocol, possibly creating and/or using in the process some other objects.
Chapter 1
Overview
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