Book Image

Java EE 8 Application Development

Book Image

Java EE 8 Application Development

Overview of this book

Java EE is an Enterprise Java standard. Applications written to comply with the Java EE specification do not tie developers to a specific vendor; instead they can be deployed to any Java EE compliant application server. With this book, you’ll get all the tools and techniques you need to build robust and scalable applications in Java EE 8. This book covers all the major Java EE 8 APIs including JSF 2.3, Enterprise JavaBeans (EJB) 3.2, Contexts and Dependency Injection (CDI) 2.0, the Java API for WebSockets, JAX-RS 2.1, Servlet 4.0, and more. The book begins by introducing you to Java EE 8 application development and goes on to cover all the major Java EE 8 APIs. It goes beyond the basics to develop Java EE applications that can be deployed to any Java EE 8 compliant application server. It also introduces advanced topics such as JSON-P and JSON-B, the Java APIs for JSON processing, and the Java API for JSON binding. These topics dive deep, explaining how the two APIs (the Model API and the Streaming API) are used to process JSON data. Moving on, we cover additional Java EE APIs, such as the Java API for Websocket and the Java Message Service (JMS), which allows loosely coupled, asynchronous communication. Further on, you’ll discover ways to secure Java EE applications by taking advantage of the new Java EE Security API. Finally, you’ll learn more about the RESTful web service development using the latest JAX-RS 2.1 specification. You’ll also get to know techniques to develop cloud-ready microservices in Java EE.
Table of Contents (21 chapters)
Title Page
Credits
About the Author
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface

Introducing JSF


JSF 2.0 introduced a number of enhancements to make JSF application development easier. In the following few sections, we will explore some of these features.

Note

Readers not familiar with earlier versions of JSF may not understand the following few sections completely. Not to worry, everything will be perfectly clear by the end of this chapter.

Facelets

One notable difference between modern versions of JSF and earlier versions is that Facelets is now the preferred view technology. Earlier versions of JSF used Java Server Pages (JSP) as their default view technology. Since the JSP technology predates JSF, sometimes using JSP with JSF felt unnatural or created problems. For example, the JSP lifecycle is different from the JSF lifecycle; this mismatch introduced some problems for JSF 1.x application developers.

JSF was designed from the beginning to support multiple view technologies. To take advantage of this capability, Jacob Hookom wrote a view technology specifically for JSF...