Introduction to Java Web Programming Gregg Sporar - - PowerPoint PPT Presentation

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Introduction to Java Web Programming Gregg Sporar - - PowerPoint PPT Presentation

Mar 03, 2024 219 likes •490 views

Introduction to Java Web Programming Gregg Sporar gregg.sporar@sun.com Agenda What is Java? Web/Application Servers Servlets JSPs Java Web Frameworks JavaServer Faces Beyond the Java Language 2 What is Java?

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Introduction to Java Web Programming

Gregg Sporar gregg.sporar@sun.com

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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 Source

FREE

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Java Flavors

Optional Packages

Java Enterprise Edition (Java EE) Java Standard Edition (Java SE)

JVM

Java Card APIs CardVM

Optional Packages

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

Client Tier Enterprise Information Tier Middle Tier

Enterprise Information Systems (EIS):

Relational Database, Legacy Applications, ERP Systems

Enterprise JavaBeans™ Enterprise JavaBeans Other Services: JNDI, JMS, JavaMail™

Java EE Application Server

Web Server JSP, 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

Devices

Development

and more...

The Virtual Machine

JavaFX Script

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Beyond the Java Language (cont'd)

  • n
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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