build java project with gradle

build-jar.gradle

apply plugin: 'java'
apply plugin: 'eclipse'
apply plugin: 'application'

mainClassName = 'hello.HelloWorld'

// tag::repositories[]
repositories { 
    mavenCentral() 
}
// end::repositories[]

// tag::jar[]
jar {
    baseName = 'gs-gradle'
    version =  '0.1.0'
}
// end::jar[]

// tag::dependencies[]
dependencies {
    compile "joda-time:joda-time:2.2"
}
// end::dependencies[]

// tag::wrapper[]
task wrapper(type: Wrapper) {
    gradleVersion = '2.3'
}
// end::wrapper[]