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Agenda
●What is Java?
●Web/Application Servers
●Servlets
●JSPs
●Java Web Frameworks
●JavaServer Faces
●Beyond the Java Language
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What is Java?
● Runs Everywhere
● and Open SourceFREE
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Java Flavors
OptionalPackages
Java Enterprise
Edition(Java EE)
Java StandardEdition
(Java SE)
JVM
Java Card APIs
CardVM
OptionalPackages
Personal Basis Profile
Personal Profile
Foundation Profile
CDC
MIDP
CLDC
KVM
Java Micro Edition(Java ME)
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“Hello World” in Java
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A Specification...
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Web/Application Servers
Client
Client
Client
Client
Client
ClientTier
Enterprise Information
TierMiddle
Tier
Enterprise Information
Systems (EIS):
RelationalDatabase,
Legacy Applications,
ERP Systems
Enterprise JavaBeans™
Enterprise JavaBeans
Other Services:JNDI, JMS,JavaMail™
Java EEApplication
Server
Web ServerJSP,
Servlets
Firewall
HTML/XML
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Web/Application Servers●Open Source
● Tomcat
● JBoss
● Geronimo
● GlassFish
●Proprietary● WebSphere
● WebLogic
● OC4J
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What is a Servlet?
A servlet is a Java programming language class used to extend the capabilities of servers that host applications accessed via a request-response programming model.
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Servlet Processing
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“Hello World” Java Servlet
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Servlet Deployment
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“Hello World” Revisited...
Not Very Robust....
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What is a JSP?
JavaServer Page: A JSP page is a text-based document that contains two types of text:
static template data, which can be expressed in any text-based format, such as HTML, SVG, WML, and XML;
...and...
JSP elements, which construct dynamic content.
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“Hello World” with a JSP
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You Might Be Wondering...Why does the code do so much grunt work?
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Java Web Frameworks●Struts
●Tapestry
●Wicket
●Stripes
●Spring MVC
●Google Web Toolkit
●JavaServer Faces (JSF)
●etc...
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What is JavaServer Faces?
JavaServer Faces technology includes:
* A set of APIs for representing UI components and managing their state, handling events and input validation, defining page navigation, and supporting internationalization and accessibility.
* A JavaServer Pages (JSP) custom tag library for expressing a JavaServer Faces interface within a JSP page.
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“Hello World” with JSF
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“Hello World” with JSF (cont'd)
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“Hello World” with JSF (cont'd)
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“Hello World” with JSF (cont'd)
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JSF Life cycle
Source: JSF for nonbelievers, by Rick Hightower
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Beyond the Java Language
DevicesDevelopment
and more...
The Virtual Machine
JavaFX Script
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Beyond the Java Language (cont'd)
on
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Resources ●Java: java.sun.com
●JavaPassion: javapassion.com
●Java EE: java.sun.com/javaee
●Servlets: java.sun.com/products/servlet/articles/tutorial/
●JSP: java.sun.com/j2ee/tutorial/1_3-fcs/doc/JSPIntro.html
●JSF: www.ibm.com/developerworks/library/j-jsf1/
●Ruby, JRuby, Rails: www.netbeans.org/kb/trails/ruby.html
●NetBeans: netbeans.org
