Book Image

Gradle Essentials

By : Kunal Dabir, Abhinandan Maheshwari
Book Image

Gradle Essentials

By: Kunal Dabir, Abhinandan Maheshwari

Overview of this book

Gradle is an advanced and modern build automation tool. It inherits the best elements of the past generation of build tools, but it also differs and innovates to bring terseness, elegance, simplicity, and the flexibility to build. Right from installing Gradle and writing your first build file to creating a fully-fledged multi-module project build, this book will guide you through its topics in a step-by-step fashion. You will get your hands dirty with a simple Java project built with Gradle and go on to build web applications that are run with Jetty or Tomcat. We take a unique approach towards explaining the DSL using the Gradle API, which makes the DSL more accessible and intuitive. All in all, this book is a concise guide to help you decipher the Gradle build files, covering the essential topics that are most useful in real-world projects. With every chapter, you will learn a new topic and be able to readily implement your build files.
Table of Contents (17 chapters)
Gradle Essentials
About the Authors
About the Reviewers

Gradle Project API

As discussed earlier, Gradle creates a project object for each build.gradle for us during the initialization phase. This object is available in our build scripts using the project reference. Being a central piece of API, there are numerous methods and properties available on this object.

Project methods

We have been using the project API even without realizing that we are calling methods on the project object. Based on a few governing rules, all the top-level method calls in the build scripts are called on a project object if no explicit reference is provided.

Let's rewrite the very simple build file from Chapter 1, Running Your First Gradle Task to use the project reference for method calls:

project.apply plugin: 'java'

project.repositories {

project.dependencies {
    testCompile 'junit:junit:4.11'

As we saw earlier in this chapter, apply is the method on the project. The so-called dependencies block is actually a method named dependencies() on project...