Book Image

Gradle Effective Implementations Guide - Second Edition

By : Hubert Klein Ikkink
Book Image

Gradle Effective Implementations Guide - Second Edition

By: Hubert Klein Ikkink

Overview of this book

Gradle is a project automation tool that has a wide range of applications. The basic aim of Gradle is to automate a wide variety of tasks performed by software developers, including compiling computer source code to binary code, packaging binary codes, running tests, deploying applications to production systems, and creating documentation. The book will start with the fundamentals of Gradle and introduce you to the tools that will be used in further chapters. You will learn to create and work with Gradle scripts and then see how to use Gradle to build your Java Projects. While building Java application, you will find out about other important topics such as dependency management, publishing artifacts, and integrating the application with other JVM languages such as Scala and Groovy. By the end of this book, you will be able to use Gradle in your daily development. Writing tasks, applying plugins, and creating build logic will be your second nature.
Table of Contents (18 chapters)
Gradle Effective Implementations Guide - Second Edition
About the Author
About the Reviewer

Build scripts are Groovy code

We must keep in mind that Gradle scripts use Groovy. This means that we can use all the Groovy's good stuff in our scripts. We already saw the use of so-called Groovy GString in our sample script. The GString object is defined as a String with double quotes and can contain references to variables defined in a ${... } section. The variable reference is resolved when we get the value of the GString.

However, other great Groovy constructs can also be used in Gradle scripts. The following sample script shows some of these constructs:

task numbers << { 
    // To define a range of numbers 
    // we can use the following syntax: 
    // start..end. 
    // The each method executes the code 
    // in the closure for each element 
    // in a collection, like a range. 
    (1..4).each { number -> 
        // def is short for define. 
        // Used to define a variable without 
        // an explicit type of the variable. 
        def squared = number * number...