The Java Platform, ENTERPRISE Edition 5 (Java EE 5) has two different but complementary
technologies for producing dynamic web content in the presentation tier—namely Java
Servlet and JavaServer Pages (JSP).
Java Servlet, the first of these technologies to appear, was initially described as extensions
to a web server for producing dynamic web content. JSP, on the other hand, is a newer technology
but is equally capable of generating the same dynamic content. However, the way in
which a servlet and a JSP page produce their content is fundamentally different servlets
embed content into logic, whereas JSP pages embed logic into content.
HIS IS THE THIRD —and most likely the last—book
in the series on information technology for
energy managers and web based energy infor-
mation and control systems. This book concentrates on
web based ENTERPRISE energy and building automation
systems, and serves as a capstone volume in this series.
The thrust here is that the highest level functions of a
building and facility automation system are provided
by a web based EIS/ECS system that provides energy
management, maintenance management, overall facility
operational management, and ties in with the ENTERPRISE
resource management system for the entire facility or
the group of facilities being managed. If there were ever
to be a fourth volume in this series, it would follow
the logical progression of the first three volumes, and
would probably be titled Web Based ENTERPRISE Resource
Management Systems.