Java Reference
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Chapter 18. Examples for Chapter 3
Chapter 3 walked you through a very basic example of creating a JAX-RS service and a
JAX-RS client that invokes on it. This service was a simple in-memory customer database. It
was modeled as a singleton JAX-RS resource class and exchanged simple XML documents.
This chapter takes the code from Chapter 3 and shows you how to run it using the download-
able workbook example code. I'll walk you through how the code is structured on disk as
well as how the examples use the Maven build system to compile, build, and run it.
Build and Run the Example Program
Perform the following steps:
1. Open a command prompt or shell terminal and change to the ex03_1 directory of the
workbook example code.
2. Make sure your PATH is set up to include both the JDK and Maven, as described in
Chapter 17 .
3. Perform the build by typing maven install . Maven uses pom.xml to figure out how
to compile, build, and run the example code.
Before we examine the build file for this example, you might want to take a quick look at the
Maven utility at its Apache website .
Maven is a build-by-convention tool. It expects that your source code be laid out in a certain
directory structure. From this standard directory structure, it knows how to automatically
find, compile, and package your main class files. It also knows where your test code is and
will compile and run it.
Every exercise in this topic will follow the directory structure shown in Figure 18-1 .
Table 18-1 describes the purpose of the various directories.
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