构造者模式

构造者模式解析:

Builder：是为创建一个Product对象的各个部件指定的抽象接口

ConcreteBuilder：它是具体的构建者，实现Builder接口，构造和装配各个部件。

Product：具体的产品

Director：指挥者，它是构建一个使用Builder接口的对象。

1.创建产品类:

//产品类：一般在产品类中写入要构建的一些功能.public class Product{    public Product(){    }}

2.抽象构造方法(这里一般是写构建的每一个细节)

//抽象建造方法：
abstract public class Builder{    public abstract void buildPart1();//这里代表构建的细节    public abstract void buildPart2();    public abstract Product creat();}

3.实现建造类,产品的零件制造

//具体的建造类：产品的零件制造public class ConcreteBuilder extends Builder{    private Product product = new Product() ;    public void buildPart1(){        System.out.println("build part one.");    }    public void buildPart2(){        System.out.println("build part two.");    }    public Product create(){        return product;    }}

4.产品的建造过程

//产品的建造过程：public class Director{    private Builder builder;    public Director(Builder builder){        this.builder = builder;    }    public void construct(){        builder = new ConcreteBuilder();        builder.buildPart1();        builder.buildPart2();        builder.create();        //continue with other code    }}

5.测试

//测试：public class Client{    private static Director director;    private static Builder builder = new ConcreteBuilder();    public void requestBuild(){        // director = new Director(builder);    }    public static void main(String[] args) {        director = new Director(builder);        director.construct();    }}