设计模式＝＝建造模式（Builder）

/* * 建造模式（Builder） * * * 将一个对象的内部表象和建造过程分割，一个建造过程可以造出不同表象的对象。可简化为模版方法模式. */package model;public class TestBuilder {    public static void main(String[] args) {        Builder b = new BuilderImpl1();        Director d = new Director(b);        Product p = d.createProduct();    }}interface Builder {    void buildPart1();    void buildPart2();    void buildPart3();    Product getProduct();}class BuilderImpl1 implements Builder {    public void buildPart1() {        System.out.println("create part1");    }    public void buildPart2() {        System.out.println("create part2");    }    public void buildPart3() {        System.out.println("create part3");    }    public Product getProduct() {        return new Product();    }}class Director {    Builder b;    public Director(Builder b) {        this.b = b;    }    public Product createProduct() {        b.buildPart1();        b.buildPart2();        b.buildPart3();        return b.getProduct();    }}class Product {}