橘生淮南则为橘，橘生淮北则为枳
3:54 PM
工厂方法模式（Factory Method Pattern）
关于产品（Product）
- AbstractProduct-抽象产品
- ConcreteProductA-具体产品A
- ConcreteProductB-具体产品B
关于工厂（Factory or Creator）：
- AbstractFactory-抽象工厂
- ConcreteFactoryA-具体工厂A
- ConcreteFactoryB-具体工厂B
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随便举个例子，套用一句古语，牵强的很……
抽象产品：橘子（Orange）
具体产品：普通橘子（Mandarin Orange），枳子（Funny Orange）
抽象工厂：土地（Soil）
具体工厂：淮南土地（HuaiNan Soil），淮北土地（HuaiBei Soil）
1# Orange.java
public abstract class Orange {
protected String taste;
protected String name;
public String getTaste() {
return taste;
}
public String getName() {
return name;
}
}
2# MandarinOrange.java
public class MandarinOrange extends Orange {
public MandarinOrange() {
this.name = "Mandarin Orange";
this.taste = "delicious";
}
}
3# FunnyOrange.java
public class FunnyOrange extends Orange {
public FunnyOrange() {
this.name = "Funny Orange";
this.taste = "funny";
}
}
---------
4# Soil.java
public abstract class Soil {
abstract public Orange harvestOrange();
public void printInvolvedParameter() {
Orange org = this.harvestOrange();
System.out.println("Species:" + org.getName());
System.out.println("Tastes:" + org.getTaste());
}
}
5# HuaiNanSoil.java
public class HuaiNanSoil extends Soil {
@Override
public Orange harvestOrange() {
return new MandarinOrange();
}
}
6# HuaiBeiSoil.java
public class HuaiBeiSoil extends Soil {
@Override
public Orange harvestOrange() {
return new FunnyOrange();
}
}
---------
7# TestFactoryMethodPattern
public class TestFactoryMethodPattern {
public static void main(String[] args) {
Soil soil = new HuaiNanSoil();
soil.printInvolvedParameter();
System.out.println("----------");
soil = new HuaiBeiSoil();
soil.printInvolvedParameter();
}
}
--------
测试结果
Species:Mandarin Orange
Tastes:delicious
----------
Species:Funny Orange
Tastes:funny
