简单抽象工厂设计模式代码

public interface IAnimalFactory {

 ICat createCat();
 
 IDog createDog();
}

 

public class BlockAnimalFactory implements IAnimalFactory {
 public ICat createCat() {
  return new BlockCat();
 }

 public IDog createDog() {
  return new BlockDog();
 }
}

 

public class WhiteAnimalFactory implements IAnimalFactory {
 public ICat createCat() {
  return new WhiteCat();
 }

 public IDog createDog() {
  return new WhiteDog();
 }
}

 

public interface ICat {
 void eat();
}

 

public interface IDog {
 void eat();
}

 

public class BlockCat implements ICat {
 public void eat() {
  System.out.println("The block cat is eating ");
 }
}

public class BlockDog implements IDog {
 public void eat() {
  System.out.println("the block dog is eating");
 }
}

public class WhiteCat implements ICat {
 public void eat() {
  System.out.println("the white cat is eating");
 }
}

public class WhiteDog implements IDog {
 public void eat() {
  System.out.println("the white dog is eating");
 }
}

 

public class Test {
 public static void main(String[] args){
  IAnimalFactory BaFactory = new BlockAnimalFactory();
  ICat bcat = BaFactory.createCat();
  bcat.eat();
  
  IDog bdog = BaFactory.createDog();
  bdog.eat();
  
  IAnimalFactory AnFactory = new WhiteAnimalFactory();
  ICat wcat = AnFactory.createCat();
  wcat.eat();
  
  IDog wdog = AnFactory.createDog();
  wdog.eat();
 }
}