interface PersonBuilder {

    void buildHead();
    
    void buildBody();
    
    void buildFoot();

    Person buildPerson();
}
//ConcreteBuilder 


class ManBuilder implements PersonBuilder {

    Person person;
    
    public ManBuilder() {
        person = new Man();
    }
    
    public void buildBody() {
        person.setBody("建造男人的身体");
    }

    public void buildFoot() {
        person.setFoot("建造男人的脚");
    }

    public void buildHead() {
        person.setHead("建造*人的头");
    }

    public Person buildPerson() {
        return person;
    }
}


//Director
class PersonDirector {

    public Person constructPerson(PersonBuilder pb) {
        pb.buildHead();
        pb.buildBody();
        pb.buildFoot();
        return pb.buildPerson();
    }
}

//Product 
class Person {

    private String head;
    
    private String body;
    
    private String foot;

    public String getHead() {
        return head;
    }

    public void setHead(String head) {
        this.head = head;
    }

    public String getBody() {
        return body;
    }

    public void setBody(String body) {
        this.body = body;
    }

    public String getFoot() {
        return foot;
    }

    public void setFoot(String foot) {
        this.foot = foot;
    }
}

class Man extends Person {

}


public class DS04_Builder{
    
    public static void main(String[] args) {
        PersonDirector pd = new PersonDirector();
        Person person = pd.constructPerson(new ManBuilder());
        System.out.println(person.getBody());
        System.out.println(person.getFoot());
        System.out.println(person.getHead());
    }
}