设计模式-1-工厂方法

参考：《设计模式那点事》

一、工厂方法模式

一:工厂方法模式
(1)创建产品对象的工厂接口
(2)子类对象决定实例化的具体对象;工厂不负责具体的对象创建
二:设计原则
(1)"开-闭"
(2)依赖倒置
无论工厂或者产品依赖于抽象而非具体的实现类
三:场合
(1)子类可能很多,以后要不断增加不同的子类实现

package SheJiMoShiNaDianShi.Factory.itf;

import SheJiMoShiNaDianShi.Factory.model.AbstractSword;

/**
* Created by hjw on 16/8/28.
* 抽象工厂-生产抽象宝刀
*/
public interface ISwordFactory {
public AbstractSword creatSword();

}

=================具体工厂1======================
package SheJiMoShiNaDianShi.Factory;

import SheJiMoShiNaDianShi.Factory.itf.ISwordFactory;
import SheJiMoShiNaDianShi.Factory.model.AbstractSword;
import SheJiMoShiNaDianShi.Factory.model.object.QiXingSword;

/**
* Created by hjw on 16/8/28.
* Caocao具体工厂-生产七星宝刀的工厂
*/
public class Caocao implements ISwordFactory {

@Override
public AbstractSword creatSword() {
return new QiXingSword();
}
}

===================具体工厂2====================

package SheJiMoShiNaDianShi.Factory;

import SheJiMoShiNaDianShi.Factory.itf.ISwordFactory;
import SheJiMoShiNaDianShi.Factory.model.AbstractSword;
import SheJiMoShiNaDianShi.Factory.model.object.BaXingSword;

/**
* Created by hjw on 16/8/28.
*/
public class Caocao2 implements ISwordFactory {
@Override
public AbstractSword creatSword() {
return new BaXingSword();
}
}

=================抽象产品======================

package SheJiMoShiNaDianShi.Factory.model;

/**
* Created by hjw on 16/8/28.
* 抽象的产品
*/
public abstract class AbstractSword {

//宝刀的名字
private String name;

public AbstractSword(String name) {
this.name = name;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

}
==================具体产品1==========================

package SheJiMoShiNaDianShi.Factory.model.object;

import SheJiMoShiNaDianShi.Factory.model.AbstractSword;

/**
* Created by hjw on 16/8/28.
*/
public class BaXingSword extends AbstractSword {
public BaXingSword() {
super("八星宝刀");
}
}

==================具体产品2==========================

package SheJiMoShiNaDianShi.Factory.model.object;

import SheJiMoShiNaDianShi.Factory.model.AbstractSword;

/**
* Created by hjw on 16/8/28.
* 七星宝刀-具体的产品
*/
public class QiXingSword extends AbstractSword {

public QiXingSword() {
super("七星宝刀");
}
}

package SheJiMoShiNaDianShi.Factory;

import SheJiMoShiNaDianShi.Factory.itf.ISwordFactory;
import SheJiMoShiNaDianShi.Factory.model.AbstractSword;

/**
* Created by hjw on 16/8/28.
*/
public class MainApp {
public static void main(String[] args) {
ISwordFactory iSwordFactory  = new Caocao();
AbstractSword abstractSword = iSwordFactory.creatSword();
System.out.println(abstractSword.getName());

iSwordFactory = new Caocao2();
abstractSword = iSwordFactory.creatSword();
System.out.println(abstractSword.getName());
}
}