将一个复杂对象的构建与它的表示分离,使得同样的构建过程可以创建不同的表示。
package com.lyz.design.builder;
/**
* Person对象的构造接口
* @author binghe
*
*/
public interface PersonBuilder {
void buildHead();
void buildBody();
void buildFoot();
Person buildPerson();
}
package com.lyz.design.builder;
/**
* Person对象的构造器
* @author binghe
*
*/
public 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("建造男人的头");
}
public Person buildPerson() {
return person;
}
}
package com.lyz.design.builder;
/**
* Person对象的整体构造器
* @author binghe
*
*/
public class PersonDirector {
public Person constructPerson(PersonBuilder pb) {
pb.buildHead();
pb.buildBody();
pb.buildFoot();
return pb.buildPerson();
}
}
package com.lyz.design.builder;
/**
* Person对象
* @author binghe
*
*/
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;
}
}
package com.lyz.design.builder;
/**
* 创建一个男人类继承Person
* @author binghe
*
*/
public class Man extends Person {
}
package com.lyz.design.builder;
/**
* 测试类
* @author binghe
*
*/
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());
}
}
建造男人的身体
建造男人的脚
建造男人的头