工厂模式

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工厂模式

public abstract class Factory {public abstract Car createCar();}

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public class AodiFactory extends Factory{public Car createCar(){return new Aodi();}}

public class BencFactory extends Factory{public Car createCar(){return new Benc();}}

public class BMWFactory extends Factory{public Car createCar(){return new BMW();}}

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public abstract class Car {public abstract void run();}

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public class Aodi extends Car{public void run(){}}

public class BMW extends Car{public void run(){}}

public class Benc extends Car{public void run(){}}

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public class Application {public static void main(String[] args) {Factory f1=new BencFactory();Car benc=f1.createCar();Factory f2=new BMWFactory();Car bmw=f2.createCar();Factory f3=new AodiFactory();Car aodi=f1.createCar();}}