task.build.gradle

apply from: "dependencies.gradle"

// A task that displays a greeting
class Greeting extends DefaultTask {
  // A configurable greeting
  @Input
  String input

  // Read-only property calculated from the greeting
  @OutputFile
  File output

  @TaskAction
  void printMessage() {
    output.write(project.hello + input)
  }
}

// Create the greeting task
task greeting(type: Greeting) {
  input = "input"
  output = new File("output.txt")
}