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Gradle Effective Implementations Guide

You're reading from   Gradle Effective Implementations Guide This comprehensive guide will get you up and running with build automation using Gradle.

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Product type Paperback
Published in May 2016
Publisher
ISBN-13 9781784394974
Length 368 pages
Edition 2nd Edition
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Author (1):
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Hubert Klein Ikkink Hubert Klein Ikkink
Author Profile Icon Hubert Klein Ikkink
Hubert Klein Ikkink
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Table of Contents (13) Chapters Close

Preface 1. Starting with Gradle FREE CHAPTER 2. Creating Gradle Build Scripts 3. Working with Gradle Build Scripts 4. Using Gradle for Java Projects 5. Dependency Management 6. Testing, Building, and Publishing Artifacts 7. Multi-project Builds 8. Mixed Languages 9. Maintaining Code Quality 10. Writing Custom Tasks and Plugins 11. Gradle in the Enterprise 12. IDE Support

Defining dependencies between tasks


Until now, we have defined tasks independent of each other. However, in our projects, we need dependencies between tasks. For example, a task to package compiled class files is dependent on the task to compile the class files. The build system should then run the compile task first, and when the task is finished, the package task must be executed.

In Gradle, we can add task dependencies with the dependsOn method for a task. We can specify a task name as the String value or task object as the argument. We can even specify more than one task name or object to specify multiple task dependencies. First, let's look at a simple task dependency:

task first << { task -> 
    println "Run ${task.name}" 
} 
 
task second << { task -> 
    println "Run ${task.name}" 
} 
 
// Define dependency of task second on task first 
second.dependsOn 'first' 

Note that we define the dependency of the second task on the first task, in the last line. When we run...

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