Gradle Task: hello

Text

task hello << {
    println 'Hello world!'
}

$ gradle hello
:hello
Hello world!

BUILD SUCCESSFUL

Total time: 2.001 secs

Gradle Task: joke

Text

task joke << {
    String  punchLine = " Part A!" 
    println "What comes before Part B?\n" + punchLine 
}

$ gradle joke -q
What comes before Part B?
 Part A!

Gradle Task: countUp

Text

task countUp << {
    4.times { print "$it " }
}

Text

$ gradle -q countUp 
0 1 2 3

Gradle:

Directed  Acyclic Graph

Text

task distribution << {
    println "We build the zip with version=$version"
}

task release(dependsOn: 'distribution') << {
    println 'We release now'
}

gradle.taskGraph.whenReady {taskGraph ->
    if (taskGraph.hasTask(release)) {
        version = '1.0'
    } else {
        version = '1.0-SNAPSHOT'
    }
}

Gradle:

Run DAG

Text

$ gradle -q distribution

We build the zip with version=1.0-SNAPSHOT

$ gradle -q release

We build the zip with version=1.0

We release now

Building Java project

apply plugin: 'java'

Build properties

project

name

path

description

projectDir

buildDir

group

version

ant

Java build file example

apply plugin: 'java'

repositories {
    mavenCentral()
}

dependencies {
    compile 'commons-collections:commons-collections:3.2'
    testCompile group: 'junit', name: 'junit', version: '4.+'
}

Where is the path?

apply plugin: 'java'

repositories {
    mavenCentral()
}

dependencies {
    compile 'commons-collections:commons-collections:3.2'
    testCompile group: 'junit', name: 'junit', version: '4.+'
}


// Use a String path to specify the source directory
compile {
    source = 'src/main/java'
}

Java build file example

$ gradle build
:compileJava UP-TO-DATE
:processResources UP-TO-DATE
:classes UP-TO-DATE
:jar
:assemble
:compileTestJava UP-TO-DATE
:processTestResources UP-TO-DATE
:testClasses UP-TO-DATE
:test UP-TO-DATE
:check UP-TO-DATE
:build

BUILD SUCCESSFUL

Total time: 2.622 secs

Supported Plugin: Language

• Java 
• groovy
• scala

Supported Plugin: Language (incubating)

• assembler 
• c
• cpp
• objective-c
• objective-cpp

Supported Plugin: Integration

• application (build java project on command line) 
• jetty (wrap project in jetty web server)
• maven (maven-publish coming soon)
• osgi
• war

Supported Plugin: Integration

• application (build java project on command line) 
• jetty (wrap project in jetty web server)
• maven
• osgi
• war

Supported Plugin: Software development

• coding standards: sonar, checkstyle, findbugs, JDepend, PMD
• IDE: eclipse, idea
• other incubating: jacoco, sonar-runner, visual-studio
• js support: gradle-grunt, node

Gradle GUI

$gradle -gui

Gradle GUI

DEMO