Snippet to easily generate directory structure for java/groovy/etc multimodule projects.

build.gradle

subprojects {
    apply plugin: 'java'

    task makeDirs(description:'make all dirs for project setup') << {
        def sources = [sourceSets.main, sourceSets.test]
        sources*.allSource*.srcDirs.flatten().each { File srcDir ->
            println "making $srcDir"
            srcDir.mkdirs()
        } 
    }
}

task wrapper(type:Wrapper, description:"create a gradlew") {
    gradleVersion = '1.5'	
}

As simple as calling:

gradle makeDirs