package org.sample;

import org.gradle.api.DefaultTask;
import org.gradle.api.provider.Property;
import org.gradle.api.tasks.Input;
import org.gradle.api.tasks.TaskAction;

public abstract class GreetingTask extends DefaultTask {

    @Input
    public abstract Property<String> getWho();

    @TaskAction
    public void greet() {
        System.out.println("Hi " + getWho().get() + "!!!");
    }

package org.example;

import org.gradle.api.DefaultTask;
import org.gradle.api.tasks.TaskAction;

public class GreetingTask extends DefaultTask {
    @TaskAction
    public void greet() {
        System.out.println("Hello from Gradle <7");
    }

abstract class GreetingTask : DefaultTask() {
    @get:Input
    abstract val greeting: Property<String>

    init {
        greeting.convention("hello from GreetingTask")
    }

    @TaskAction
    fun greet() {
        println(greeting.get())
    }
}

// Use the default greeting
tasks.register<GreetingTask>("hello")

// Customize the greeting
tasks.register<GreetingTask>("greeting") {

abstract class GreetingTask extends DefaultTask {
    @Input
    abstract Property<String> getGreeting()

    GreetingTask() {
        greeting.convention('hello from GreetingTask')
    }

    @TaskAction
    def greet() {
        println greeting.get()
    }
}

// Use the default greeting
tasks.register('hello', GreetingTask)

// Customize the greeting
tasks.register('greeting',GreetingTask) {

    void apply(Project project) {
        project.getTasks().register("hello", GreetingTask) {
            greeter.convention("Greeter")
        }
    }
}
// end::convention-callsites-from-plugin[]

apply plugin: GreetingPlugin

// tag::convention-callsites-from-buildscript[]
tasks.withType(GreetingTask).configureEach {
    // setting convention from build script
    guest.convention("Guest")
}

// tag::add-action[]
// tag::define-task[]
abstract class GreetingTask extends DefaultTask {
// end::define-task[]
    @TaskAction
    def greet() {
        println 'hello from GreetingTask'
    }
// tag::define-task[]
}
// end::define-task[]

// Create a task using the task type
tasks.register('hello', GreetingTask)

// tag::add-action[]
// tag::define-task[]
abstract class GreetingTask : DefaultTask() {
    // end::define-task[]
    @TaskAction
    fun greet() {
        println("hello from GreetingTask")
    }
// tag::define-task[]
}
// end::define-task[]

// Create a task using the task type
tasks.register<GreetingTask>("hello")

    override fun apply(project: Project) {
        project.getTasks().register<GreetingTask>("hello") {
            greeter.convention("Greeter")
        }
    }
}
// end::convention-callsites-from-plugin[]

// tag::convention-callsites-from-buildscript[]
apply<GreetingPlugin>()

tasks.withType<GreetingTask>().configureEach {
    // setting convention from build script
    guest.convention("Guest")
}

hello from GreetingTask

// tag::test-task[]
class GreetingTaskTest {
    @Test
    void canAddTaskToProject() {
        Project project = ProjectBuilder.builder().build()
        def task = project.task('greeting', type: GreetingTask)
        assertTrue(task instanceof GreetingTask)
    }
}