To get the most out of this book

This book can be read without a computer or laptop at hand, in which case you need nothing more than the book itself. However, to follow the examples in the book, you need Java 8, which you can download from http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html, and you will also need your favorite IDE. I have used the Software Spring Tool Suite; download the latest version of Spring Tool Suite (STS) from https://spring.io/tools/sts/all according to your OS. Java 8 and STS work on a variety of platforms—Windows, macOS, and Linux.

Download the example code files

You can download the example code files for this book from your account at www.packtpub.com. If you purchased this book elsewhere, you can visit www.packtpub.com/support and register to have the files emailed directly to you.

You can download the code files by following these steps:

1. Log in or register at www.packtpub.com.
2. Select the SUPPORT tab.
3. Click on Code Downloads & Errata.
4. Enter the name of the book in the Search box and follow the onscreen instructions.

Once the file is downloaded, please make sure that you unzip or extract the folder using the latest version of:

• WinRAR/7-Zip for Windows
• Zipeg/iZip/UnRarX for Mac
• 7-Zip/PeaZip for Linux

The code bundle for the book is also hosted on GitHub at https://github.com/PacktPublishing/Mastering-Spring-Boot-2.0. In case there's an update to the code, it will be updated on the existing GitHub repository.

We also have other code bundles from our rich catalog of books and videos available at https://github.com/PacktPublishing/. Check them out!

Conventions used

There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in the text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "Let's configure Zuul properties in our application using the application.yml configuration file."

A block of code is set as follows:

 @RestController
 class HelloController {
   @GetMapping("/")
   String hello() {
     "Hello World!!!"
   }
 } 

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

  <dependencies>
     <dependency>               
       <groupId>org.springframework.boot</groupId>             
       <artifactId>spring-boot-starter-web</artifactId>    
     </dependency>
  </dependencies>

Any command-line input or output is written as follows:

$ Spring run HelloController.groovy

Bold: Indicates a new term, an important word, or words that you see onscreen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "Click the Generate Project button, and we have a ready-to-run application."

Warnings or important notes appear like this.

Tips and tricks appear like this.