Join the explorers, builders, and individuals who boldly offer new solutions to old problems. For open source, innovation is only possible because of the people behind it. STUDENT WORKBOOK EAP 7.0 JB083x FUNDAMENTALS OF JAVA EE DEVELOPMENT Edition 1 JB083x-EAP-7.0-en-1-20181001 Copyright ©2018 Red Hat, Inc. FUNDAMENTALS OF JAVA EE DEVELOPMENT JB083x-EAP-7.0-en-1-20181001 Copyright ©2018 Red Hat, Inc. EAP 7.0 JB083x Fundamentals of Java EE Development Edition 1 20181001 Publication date 20181001 Authors: Ravishankar Srinivasan, Eduardo Ramirez, Zachary Gutterman, Jim Rigsbee, Richard Allred Editor: David O'Brien Copyright © 2018 Red Hat, Inc. The contents of this course and all its modules and related materials, including handouts to audience members, are Copyright © 2018 Red Hat, Inc. No part of this publication may be stored in a retrieval system, transmitted or reproduced in any way, including, but not limited to, photocopy, photograph, magnetic, electronic or other record, without the prior written permission of Red Hat, Inc. This instructional program, including all material provided herein, is supplied without any guarantees from Red Hat, Inc. Red Hat, Inc. assumes no liability for damages or legal action arising from the use or misuse of contents or details contained herein. If you believe Red Hat training materials are being used, copied, or otherwise improperly distributed please e-mail [email protected] or phone toll-free (USA) +1 (866) 626-2994 or +1 (919) 754-3700. Red Hat, Red Hat Enterprise Linux, the Shadowman logo, JBoss, Hibernate, Fedora, the Infinity Logo, and RHCE are trademarks of Red Hat, Inc., registered in the United States and other countries. Linux® is the registered trademark of Linus Torvalds in the United States and other countries. Java® is a registered trademark of Oracle and/or its affiliates. XFS® is a registered trademark of Silicon Graphics International Corp. or its subsidiaries in the United States and/or other countries. The OpenStack® Word Mark and OpenStack Logo are either registered trademarks/service marks or trademarks/ service marks of the OpenStack Foundation, in the United States and other countries and are used with the OpenStack Foundation's permission. We are not affiliated with, endorsed or sponsored by the OpenStack Foundation, or the OpenStack community. All other trademarks are the property of their respective owners. Contributors: Connie Petlitzer, Rob Locke, Bowe Strickland, Scott McBrien, George Hacker, Forrest Taylor Document Conventions vii Introduction ix Fundamentals of Java EE Development ...................................................................... ix Lab Setup Instructions for Exercises ........................................................................... x 1. Transitioning to Multi-tiered Applications 1 Describing Enterprise Applications ............................................................................. 2 Quiz: Describing Enterprise Applications ..................................................................... 5 Describing Multi-tiered Application Architecture .......................................................... 9 Quiz: Multi-tiered Application Architecture ................................................................. 14 Developing Applications Using Red Hat JBoss Developer Studio .................................... 18 Guided Exercise: Developing Applications Using Red Hat JBoss Developer Studio ............ 22 Summary ............................................................................................................... 29 2. Packaging and Deploying Applications to an Application Server 31 Describing an Application Server .............................................................................. 32 Quiz: Describing an Application Server ...................................................................... 35 Packaging and Deploying a Java EE Application ......................................................... 39 Guided Exercise: Packaging and Deploying a Java EE Application .................................. 43 Summary ............................................................................................................... 55 3. Creating Enterprise Java Beans 57 Converting a POJO to an EJB .................................................................................. 58 Guided Exercise: Creating a Stateless EJB ................................................................. 66 Summary ............................................................................................................... 72 4. Managing Persistence 73 Describing the Persistence API ................................................................................. 74 Quiz: Describing the Persistence API ........................................................................ 82 Persisting Data ....................................................................................................... 84 Guided Exercise: Persisting Data ............................................................................... 91 Creating Queries .................................................................................................... 99 Guided Exercise: Creating Queries ........................................................................... 106 Summary .............................................................................................................. 112 5. Managing Entity Relationships 113 Configuring Entity Relationships .............................................................................. 114 Guided Exercise: Configuring Entity Relationships ..................................................... 123 Summary .............................................................................................................. 131 6. Creating REST Services 133 Describing Web Services Concepts .......................................................................... 134 Quiz: Web Services ................................................................................................ 137 Creating REST Services with JAX-RS ....................................................................... 139 Guided Exercise: Exposing a REST Service ................................................................ 147 Summary .............................................................................................................. 154 JB083x-EAP-7.0-en-1-20181001 v vi JB083x-EAP-7.0-en-1-20181001 DOCUMENT CONVENTIONS REFERENCES "References" describe where to find external documentation relevant to a subject. NOTE "Notes" are tips, shortcuts or alternative approaches to the task at hand. Ignoring a note should have no negative consequences, but you might miss out on a trick that makes your life easier. IMPORTANT "Important" boxes detail things that are easily missed: configuration changes that only apply to the current session, or services that need restarting before an update will apply. Ignoring a box labeled "Important" will not cause data loss, but may cause irritation and frustration. WARNING "Warnings" should not be ignored. Ignoring warnings will most likely cause data loss. JB083x-EAP-7.0-en-1-20181001 vii viii JB083x-EAP-7.0-en-1-20181001 INTRODUCTION FUNDAMENTALS OF JAVA EE DEVELOPMENT Fundamentals of Java EE Development (JB083x) exposes experienced Java Standard Edition (Java SE) developers to the world of Java Enterprise Edition (Java EE). Students will learn about the various specifications that make up Java EE. Through hands-on labs, students will learn how to develop multi- tiered enterprise applications using various Java EE APIs. COURSE • Describe the differences between Java SE and OBJECTIVES Java EE application architectures. • Create application components using the EJB, JPA, JAX-RS, and CDI specifications. • Develop back-end components necessary to support a three-tiered web application using JBoss Enterprise Application Platform (EAP) and Apache Maven tooling. • Deploy applications to Red Hat JBoss Enterprise Application Platform. AUDIENCE • Developers with Java SE experience. PREREQUISITES • Proficient in developing Java SE applications. • Proficient in using an IDE such as Red Hat Developer Studio or Eclipse. • Experience with Maven is recommended. JB083x-EAP-7.0-en-1-20181001 ix Introduction LAB SETUP INSTRUCTIONS FOR EXERCISES Introduction This course includes a number of guided exercises, which give you an opportunity to practice the skills you are learning in the course presentations. To complete these exercises, you need to configure a practice environment that you completely control. These instructions assume that you are running a recent version of Apple macOS, Microsoft Windows 7, 8, or 10, or a Linux distribution on your workstation. If you are using a Linux distribution, we recommend that you use the latest stable Red Hat Enterprise Linux (RHEL), or Fedora Workstation edition. Hardware Requirements The following minimum hardware is required to run the exercises in this course: • 64-bit quad core CPU • 4 GB RAM (minimum), 8 GB RAM (recommended) • 80GB hard disk space Installation Overview You will use the following software components during this course: • Git client • JDK 1.8 • Apache Maven 3.3.9 • JBoss EAP 7.0.0 • Red Hat JBoss Developer Studio 11.0.0 • Firefox web browser 62.0 or later with the REST client add-on The installation of the lab environment consists of the following tasks: 1. Install a Git client 2. Install JDK 1.8 3. Install and configure Apache Maven 4. Install Red Hat JBoss EAP 5.