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Builder patter
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‎BuildPattern/BuildPattern.iml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<module type="JAVA_MODULE" version="4">
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<component name="NewModuleRootManager" inherit-compiler-output="true">
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<exclude-output />
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<content url="file://$MODULE_DIR$">
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<sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
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</content>
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<orderEntry type="inheritedJdk" />
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<orderEntry type="sourceFolder" forTests="false" />
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</component>
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</module>

‎BuildPattern/src/Main.java‎

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import cn.yang.bean.Car;
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import cn.yang.manage.Builder;
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import cn.yang.manage.Builder1;
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import cn.yang.manage.Builder2;
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import cn.yang.manage.Direcotr;
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/**
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* @author Cool-Coding 2017/7/10
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*/
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public class Main {
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public static void main(String args[]){
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Direcotr direcotr=new Direcotr();
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//流程一
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Builder builder1=new Builder1();
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direcotr.setBuilder(builder1);
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direcotr.build();
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Car car1=builder1.getCar();
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System.out.println(car1);
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//流程二
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Builder builder2=new Builder2();
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direcotr.setBuilder(builder2);
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direcotr.build();
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Car car2=builder2.getCar();
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System.out.println(car2);
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}
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}

‎BuildPattern/src/cn/yang/bean/Car.java‎

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package cn.yang.bean;
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/**
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* @author Cool-Coding 2017/7/10
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*/
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public class Car {
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private String wheels;//车轮
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private String steeringWheel;//方向盘
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private String carBody;//车身
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public String getWheels() {
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return wheels;
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}
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public void setWheels(String wheels) {
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this.wheels = wheels;
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}
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public String getSteeringWheel() {
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return steeringWheel;
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}
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public void setSteeringWheel(String steeringWheel) {
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this.steeringWheel = steeringWheel;
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}
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public String getCarBody() {
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return carBody;
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}
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public void setCarBody(String carBody) {
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this.carBody = carBody;
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}
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@Override
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public String toString() {
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return "车轮:"+this.wheels+";方向盘:"+this.steeringWheel+";车身:"+this.carBody;
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}
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}

‎BuildPattern/src/cn/yang/manage/Builder.java‎

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package cn.yang.manage;
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import cn.yang.bean.Car;
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/**
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* @author Cool-Coding 2017/7/10
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*/
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public abstract class Builder {
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protected Car car;
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public Builder(){
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car=new Car();
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}
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public abstract void buildWheels();
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public abstract void buildSteeringWheels();
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public abstract void buildCarBody();
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//生产完成后，车出厂
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public Car getCar(){
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return car;
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}
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}

‎BuildPattern/src/cn/yang/manage/Builder1.java‎

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package cn.yang.manage;
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import cn.yang.bean.Car;
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/**
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* @author Cool-Coding 2017/7/10
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*/
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public class Builder1 extends Builder {
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@Override
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public void buildWheels() {
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car.setWheels("2m");
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}
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@Override
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public void buildSteeringWheels() {
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car.setSteeringWheel("1.5m");
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}
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@Override
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public void buildCarBody() {
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car.setCarBody("长度5m，宽度1.5m");
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}
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}

‎BuildPattern/src/cn/yang/manage/Builder2.java‎

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package cn.yang.manage;
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import cn.yang.bean.Car;
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/**
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* @author Cool-Coding 2017/7/10
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*/
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public class Builder2 extends Builder {
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@Override
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public void buildWheels() {
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car.setWheels("10m");
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}
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@Override
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public void buildSteeringWheels() {
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car.setSteeringWheel("3m");
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}
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@Override
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public void buildCarBody() {
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car.setCarBody("长度6m，宽度3m");
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}
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}

‎BuildPattern/src/cn/yang/manage/Direcotr.java‎

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package cn.yang.manage;
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/**
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* @author Cool-Coding 2017/7/10
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*/
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public class Direcotr {
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Builder builder;
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public Builder getBuilder() {
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return builder;
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}
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public void setBuilder(Builder builder) {
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this.builder = builder;
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}
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/**
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* 按照流程生产汽车(严格来说，生产可以同时进行，也就是说builder方法可以同时进行，组装需要流程)
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* 此处可以理解为按照一定流程组装汽车
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*/
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public void build(){
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builder.buildCarBody();
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builder.buildWheels();
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builder.buildSteeringWheels();
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}
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}

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