build.gradle

buildscript {
  repositories {
    mavenCentral()
  }
  dependencies {
    classpath group: 'org.twitter4j', name: 'twitter4j-core', version: '3.0.5'
  }
}

import twitter4j.*
import java.io.*

task say << {
  Twitter twitter = new TwitterFactory().getInstance()
  Status status = twitter.updateStatus(project.tweet)
  println("Successfully updated the status to [" + status.getText() + "].")
}

// Usage: gradle say -Ptweet="Hello Gradle! #m3dev"

twitter4j.properties

debug=true
oauth.consumerKey=***
oauth.consumerSecret=***
oauth.accessToken=***
oauth.accessTokenSecret=***