AbstractFactory

public interface Animal {
/**所有动物都会吃*/
 public void eat();
}
public class Tiger implements Animal {
 public void eat() {
  System.out.println("老虎要吃饭！");
 }
 public void run() {
  System.out.println("老虎要跑步！");
 }
}
public class Parrot implements Animal {
 public void eat() {
  // TODO Auto-generated method stub
  System.out.println("鹦鹉要吃饭");
 }
 public void fly() {
  System.out.println("鹦鹉要飞翔");
 }

====================================

public interface AbstractFactory {

 Tiger createTiger();
 Dolphin createDolphin();
 Parrot createParrot();
}
==============================

public class AsiaTiger extends Tiger {

 public void run() {
  System.out.println("亚洲虎想跑步");
 }

 public void eat() {
  System.out.println("亚洲虎想吃饭");
 }
}

public class AsiaParrot extends Parrot{

 public void eat() {
  // TODO Auto-generated method stub
  System.out.println("亚洲鹦鹉要吃饭");
 }

 public void fly() {
  System.out.println("亚洲鹦鹉要飞翔");
 }
}

public class AsiaDophin extends Dolphin {
 public void swim() {
  System.out.println("亚洲海豚想跑步");
 }

 public void eat() {
  System.out.println("亚洲海豚想吃饭");
 }
}

public class AsiaFactory implements AbstractFactory {

 public Dolphin createDolphin() {
  // TODO Auto-generated method stub
  return new AsiaDophin();
 }

 public Parrot createParrot() {
  // TODO Auto-generated method stub
  return new AsiaParrot();
 }

 public Tiger createTiger() {
  // TODO Auto-generated method stub
  return new AsiaTiger();
 }

}

 

=====================================
public class AfricaTiger extends Tiger{
 public void run()
 {
  System.out.println("非洲虎想跑步");
 }
 public void eat()
 {
  System.out.println("非洲虎想吃饭");
 }
}

public class AfricaParrot extends Parrot{

 public void eat() {
  // TODO Auto-generated method stub
  System.out.println("非洲鹦鹉要吃饭");
 }

 public void fly() {
  System.out.println("非洲鹦鹉要飞翔");
 }
}

public class AfricaDophin extends Dolphin {
 public void swim() {
  System.out.println("非洲海豚想跑步");
 }

 public void eat() {
  System.out.println("非洲海豚想吃饭");
 }
}

public class AfricaFactory implements AbstractFactory {

 public Dolphin createDolphin() {
  // TODO Auto-generated method stub
  return new AfricaDophin();
 }

 public Parrot createParrot() {
  // TODO Auto-generated method stub
  return new AfricaParrot();
 }

 public Tiger createTiger() {
  // TODO Auto-generated method stub
  return new AfricaTiger();
 }

}

 

=====================================================

 

public class Client {

 /**
  * @param args
  * @throws IllegalAccessException
  * @throws InstantiationException
  * @throws ClassNotFoundException
  */
 public static void main(String[] args) {
  // TODO Auto-generated method stub
  AbstractFactory factory = new AfricaFactory();

  Tiger tiger = factory.createTiger();
  tiger.eat();
  tiger.run();

  Dolphin dolphin = factory.createDolphin();
  dolphin.eat();
  dolphin.swim();

  Parrot parrot = factory.createParrot();
  parrot.eat();
  parrot.fly();

  factory = new AsiaFactory();

  tiger = factory.createTiger();
  tiger.eat();
  tiger.run();

  dolphin = factory.createDolphin();
  dolphin.eat();
  dolphin.swim();

  parrot = factory.createParrot();
  parrot.eat();
  parrot.fly();

 }

}

定义：客户端要创建一些产品，而这些产品又归属不同产品类别，可以使用抽象工厂模式，抽象工厂类负责定义创建对象的接口，这一系列对象的创建工作由实现抽象工厂的具体工厂类来具体完成；

原理：四部分组成，抽象工厂类、实现抽象工厂类的具体类、抽象类、实现抽象类的具体类

 

优点：1、客户端不负责对象创建，把任务交给了具体的工厂类；2、当一系列相互关联的产品被设计到一个工厂类时候，客户端调用变得非常简单；

缺点：有新的产品加进来，需要修改抽象工厂类的设计