『学習ノート』のJAVAデザインモデル--建造者モデル
22434 ワード
《 》 ， ： ： ： ： （Builder）
前言
， ， ， corn 。一、建設者モデルとは何か
Builder ， GoF 23 ， ： ， 。GoF ， ， ： （ ， ， ）， ， （ ）， ，Builder ， ， ， ， ， 。
、
建造者模式适合于创建比较复杂的对象，所谓复杂有两个方向：
- ， 。- ， 。以上の2種類の複雑なオブジェクトBuilderモードに対してもそれぞれ2つの表現形式が進化した.
1つ目:Product、ConcreteBuilder、Builder、Directorによって形成されたコンストラクタモード
， Builder 4 ： (Product)， (ConcreteBuilder)， (Builder)， (Director)：： ，：：， 、 ， ， ， ， ， ...， Builder 。， 。public class SysApplication { // private String data; // private String operationSystem; // private String driver; // private String usefulSoftware; public String getData() { return data; } public void setData(String data) { this.data = data; } public String getOperationSystem() { return operationSystem; } public void setOperationSystem(String operationSystem) { this.operationSystem = operationSystem; } public String getDriver() { return driver; } public void setDriver(String driver) { this.driver = driver; } public String getUsefulSoftware() { return usefulSoftware; } public void setUsefulSoftware(String usefulSoftware) { this.usefulSoftware = usefulSoftware; } }ISysInstallBuilder ， Builder 。public interface ISysInstallBuilder { // public void backupdata(); // public void formatDisk(); // public void copyData(); // public void installOperationSystem(); // public void installDriver(); // public void installUsefulSoftware(); // public SysApplication getSystemApplication(); }Windows XP WinXpInstallBuilder， Windows XP 。public class WinXpInstallBuilder implements ISysInstallBuilder { private SysApplication systemApplication = new SysApplication(); @Override public void backupdata() { // System.out.println(" "); } @Override public void formatDisk() { // System.out.println(" "); } @Override public void copyData() { // System.out.println(" "); this.systemApplication.setData(" "); } @Override public void installOperationSystem() { // Windows XP System.out.println(" Windows XP "); this.systemApplication.setOperationSystem("Windows XP"); } @Override public void installDriver() { // Windows XP System.out.println(" Windows XP "); this.systemApplication.setDriver("Windows XP "); } @Override public void installUsefulSoftware() { // Windows XP System.out.println(" Windows XP "); this.systemApplication.setUsefulSoftware("Windows XP "); } @Override public SysApplication getSystemApplication() { // return this.systemApplication; } }WinXpInstallBuilder， 。public class MainClass { public static void main(String[] args) { // WinXpInstallBuilder ISysInstallBuilder builder = new WinXpInstallBuilder(); // WinXpInstallBuilder， builder.backupdata(); builder.copyData(); builder.formatDisk(); builder.installDriver(); builder.installOperationSystem(); builder.installUsefulSoftware(); // SysApplication sysApplication = builder.getSystemApplication(); System.out.println("---------- ----------"); System.out.println(" ：" + sysApplication.getData()); System.out.println(" ：" + sysApplication.getDriver()); System.out.println(" ：" + sysApplication.getOperationSystem()); System.out.println(" ：" + sysApplication.getUsefulSoftware()); } }：Windows XPWindows XPWindows XP---------- ----------：：Windows XP：Windows XP：Windows XP， ， ， ， 。， ， ？ 。public class SysInstallDirector { private ISysInstallBuilder builder; public SysInstallDirector(ISysInstallBuilder builder) { this.builder = builder; } public void installSystem() { builder.backupdata(); builder.formatDisk(); builder.installOperationSystem(); builder.installDriver(); builder.installUsefulSoftware(); builder.copyData(); } }。public class MainClass { public static void main(String[] args) { // WinXpInstallBuilder ISysInstallBuilder builder = new WinXpInstallBuilder(); // SysInstallDirector director = new SysInstallDirector(builder); // director.installSystem(); // SysApplication sysApplication = builder.getSystemApplication(); System.out.println("---------- ----------"); System.out.println(" ：" + sysApplication.getData()); System.out.println(" ：" + sysApplication.getDriver()); System.out.println(" ：" + sysApplication.getOperationSystem()); System.out.println(" ：" + sysApplication.getUsefulSoftware()); } }：Windows XPWindows XPWindows XP---------- ----------：：Windows XP：Windows XP：Windows XP， 。Win7 Win7InstallBuilder。public class Win7InstallBuilder implements ISysInstallBuilder { private SysApplication systemApplication = new SysApplication(); @Override public void backupdata() { // System.out.println(" "); } @Override public void formatDisk() { // System.out.println(" "); } @Override public void copyData() { // System.out.println(" "); this.systemApplication.setData(" "); } @Override public void installOperationSystem() { // Win7 System.out.println(" Win7 "); this.systemApplication.setOperationSystem("Win7"); } @Override public void installDriver() { // Win7 System.out.println(" Win7 "); this.systemApplication.setDriver("Win7 "); } @Override public void installUsefulSoftware() { // Win7 System.out.println(" Win7 "); this.systemApplication.setUsefulSoftware("Win7 "); } @Override public SysApplication getSystemApplication() { // return this.systemApplication; } }MainClass Win7 。public class MainClass { public static void main(String[] args) { // Win7InstallBuilder ISysInstallBuilder builder = new Win7InstallBuilder(); // SysInstallDirector director = new SysInstallDirector(builder); // director.installSystem(); // SysApplication sysApplication = builder.getSystemApplication(); System.out.println("---------- ----------"); System.out.println(" ：" + sysApplication.getData()); System.out.println(" ：" + sysApplication.getDriver()); System.out.println(" ：" + sysApplication.getOperationSystem()); System.out.println(" ：" + sysApplication.getUsefulSoftware()); } }：Win7Win7Win7---------- ----------：：Win7：Win7：Win7Win7 ，Builder ， ， 。PersonalInfo， ： ， ， ， ， ， 。public class PersonalInfo { private String name; private int age; private String gender; private String address; private String iDNumber; private String phoneNumber; public String getPhoneNumber() { return phoneNumber; } public String getAddress() { return address; } public String getName() { return name; } public int getAge() { return age; } public String getGender() { return gender; } public String getIDNumber() { return iDNumber; } public static class Builder { private String name; private int age; private String gender; private String address; private String iDNumber; private String phoneNumber; public Builder(String name) { this.name = name; } public Builder phoneNumber(String phoneNumber) { this.phoneNumber = phoneNumber; return this; } public Builder address(String address) { this.address = address; return this; } public Builder age(int age) { this.age = age; return this; } public Builder gender(String gender) { this.gender = gender; return this; } public Builder iDNumber(String iDNumber) { this.iDNumber = iDNumber; return this; } public PersonalInfo build() { return new PersonalInfo(this); } } private PersonalInfo(Builder builder) { this.address = builder.address; this.age = builder.age; this.gender = builder.gender; this.iDNumber = builder.iDNumber; this.name = builder.name; this.phoneNumber = builder.phoneNumber; } }MainClass 。public class MainClass { public static void main(String[] args) { PersonalInfo personalInfo = new PersonalInfo.Builder(" ") .address(" ").age(19).gender(" ").build(); System.out.println("------------ ----------------"); System.out.println(" ："+personalInfo.getName()); System.out.println(" ："+personalInfo.getAddress()); System.out.println(" ："+personalInfo.getAge()); System.out.println(" ："+personalInfo.getGender()); } }：------------ ----------------：：：19：， ， ， 。、
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