建造者模式的例子

Builder
public interface PersonBuilder {
void buildHead();
void buildBody();
void buildFoot();
Person buildPerson();
}
//具体建造工具
ConcreteBuilder
public class ManBuilder implements PersonBuilder {
Person person;
public ManBuilder() {
person = new Person();
}
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(建造男人的头);
}
public Person buildPerson() {
return person;
}
}
//建造者
Director
public class PersonDirector {
public Person constructPerson(PersonBuilder pb) {
pb.buildHead();
pb.buildBody();
pb.buildFoot();
return pb.buildPerson();
}
}
Product
public 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;
}
}
public class Man extends Person {
}
Test
public class Test{
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());
}
}
result
建造男人的身体
建造男人的脚
建造男人的头