creating Person 'people.barry'
configuring Person 'people.barry'
creating Person 'people.john'
configuring Person 'people.john'

> Task :listPeople
Hello Barry Barry!
Hello John Smith!

BUILD SUCCESSFUL in 0s

public class PersonTest{

    Person person;
    @Before public void setup(){
        person = new Person();
    }

    @Test public void testAge() {
        person.setAge(30);
        assertEquals(30, person.getAge());
    }


    @Test public void testSurname() {
        person.setSurname("Duke");
        assertEquals("Duke", person.getSurname());
    }

package org.gradle.sample.services;

import org.gradle.sample.api.Person;
import org.gradle.sample.shared.Helper;

public class PersonService {
    boolean checkPerson(Person person) {
        System.out.println(Helper.prettyPrint("Checking"));
        if (person.getFirstname().length() < 2) {
            return false;
        }
        return true;
    }

// tag::sample[]
public class Simpsons {
    private static final Person HOMER = new Person("Homer", "Simpson");
    private static final Person MARGE = new Person("Marjorie", "Simpson");
    private static final Person BART = new Person("Bartholomew", "Simpson");
    private static final Person LISA = new Person("Elisabeth Marie", "Simpson");
    private static final Person MAGGIE = new Person("Margaret Eve", "Simpson");

        buildFile << '''
@Managed interface Person extends Named {
    Address getAddress()
}

@Managed interface Address {
    String getCity()
    void setCity(String s)
}

model {
    tasks {
        show(Task) {
            doLast {
                def person = $.barry
                println "$person.name lives in $person.address.city"
            }
        }
    }

@Managed
interface Person {
    String getFirstName()
    void setFirstName(String n)

    String getLastName()
    void setLastName(String n)
}

// tag::configure-rule[]
model {
    person {
        println "configuring person"
        lastName = "Smith"
    }
}
// end::configure-rule[]
model {
    person(Person) {
        firstName = "John"
    }
    tasks {
        showPerson(Task) {

public class Family {
    private final List<Person> members;

    public Family(Person... members) {
        this.members = Arrays.asList(members);
    }

    public List<Person> getMembers() {
        return members;
    }

    public int size() {
        return members.size();
    }

    public boolean contains(Person person) {
        return members.contains(person);
    }

    @java.lang.Override

person.name = person.name[0].toUpperCase() + person.name[1..-1]...

package com.acme.consumer;

import com.acme.lib.Person;

public class Consumer {
    private final Person person;

    public Consumer(Person person) {
        this.person = person;
    }

    public Person getPerson() {
        return person;
    }

package org.gradle.sample

import org.junit.*
import static org.junit.Assert.*

class PersonTest {
    @Test
    def void canCreateAPerson() {
        Person person = new Person()
        person.name = 'Barry'
        assertEquals('Barry', person.name)
    }