延續『螞蟻學模式』之實例化簡單工廠、工廠方法模式中工廠方法模式的實例。
而這次，汽車廠(MotorFactory)有新的需求，不只要生產國產車(NativeMotor)，還需要生產進口車(ForeignMotor)。這兩種車都包括公交(Bus)和小轎車(Car)。
1. com.cleversoft.designpatterns.abstractfactory.MotorFactory.java

package ?com.cleversoft.designpatterns.abstractfactory;

 public ? interface ?MotorFactory? {

}

2. com.cleversoft.designpatterns.abstractfactory.NativeMotor.java
package?com.cleversoft.designpatterns.abstractfactory;

public?class?NativeMotor?implements?MotorFactory?{
????public?Car?produceCar()?{
????????return?new?NativeCar();
????}

????public?Bus?produceBus()?{
????????return?new?NativeBus();
????}
}

3. com.cleversoft.designpatterns.abstractfactory.ForeignMotor.java
package?com.cleversoft.designpatterns.abstractfactory;

public?class?ForeignMotor?implements?MotorFactory?{
????public?Car?produceCar()?{
????????return?new?ForeignCar();
????}

????public?Bus?produceBus()?{
????????return?new?ForeignBus();
????}
}

4. com.cleversoft.designpatterns.abstractfactory.Bus.java
package?com.cleversoft.designpatterns.abstractfactory;

public?interface?Bus?{
????public?void?run();
}

5. com.cleversoft.designpatterns.abstractfactory.Car.java
package?com.cleversoft.designpatterns.abstractfactory;

public?interface?Car?{
????public?void?run();
}

6. com.cleversoft.designpatterns.abstractfactory.ForeignBus.java
package?com.cleversoft.designpatterns.abstractfactory;

public?class?ForeignBus?implements?Bus?{

????public?ForeignBus()?{

????}

????public?void?run()?{
????????System.out.println("This?is?a?foreign?bus!");
????}
}

7. com.cleversoft.designpatterns.abstractfactory.ForeignCar.java
package?com.cleversoft.designpatterns.abstractfactory;

public?class?ForeignCar?implements?Car?{

????public?ForeignCar()?{

????}

????public?void?run()?{
????????System.out.println("This?is?a?foreign?car!");
????}
}

8. com.cleversoft.designpatterns.abstractfactory.NativeBus.java
package?com.cleversoft.designpatterns.abstractfactory;

public?class?NativeBus?implements?Bus?{

????public?NativeBus()?{

????}

????public?void?run()?{
????????System.out.println("This?is?a?native?bus!");
????}
}

9. com.cleversoft.designpatterns.abstractfactory.NativeCar.java
package?com.cleversoft.designpatterns.abstractfactory;

public?class?NativeCar?implements?Car?{
????public?NativeCar()?{

????}

????public?void?run()?{
????????System.out.println("This?is?a?native?car!");
????}
}

10. com.cleversoft.designpatterns.abstractfactory.Main.java
package?com.cleversoft.designpatterns.abstractfactory;

public?class?Main?{

????/**
?????*?@param?args
?????*/
????public?static?void?main(String[]?args)?{
????????//?TODO?Auto-generated?method?stub
????????Bus?b?=?new?ForeignMotor().produceBus();
????????b.run();
????????Car?c?=?new?NativeMotor().produceCar();
????????c.run();
????}

}


終于開始想通一些問題，。也再次印證這樣的道理：沒有笨的讀者，只有笨的作者。
從分析的角度，你要做的無非是些抽象的活兒；從普通編程人員的角度，你要實現的是類似NativeBus.java的具體實現。這是差距，巨大的差距！
會寫實例以外的一些東西。

參考資料：
1. http://terrylee.cnblogs.com/archive/2005/12/13/295965.html
2. 《Java與模式》

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