延续『蚂蚁学模式』之实例化简单工厂、工厂方法模式中工厂方法模式的实例。
而这次，汽车厂(MotorFactory)有新的需求，不只要生产国产车(NativeMotor)，还需要生产进口车(ForeignMotor)。这两种车都包括公交(Bus)和小轿车(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();
    }

}


终于开始想通一些问题，。也再次印证这样的道理：没有笨的读者，只有笨的作者。
从分析的角度，你要做的无非是些抽象的活儿；从普通编程人员的角度，你要实现的是类似NativeBus.java的具体实现。这是差距，巨大的差距！
会写实例以外的一些东西。

参考资料：
1. http://terrylee.cnblogs.com/archive/2005/12/13/295965.html
2. 《Java与模式》

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