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 {}