interface Service{

 void service() ;

}

interface  ServiceFactory{

 Service getService() ;

} 

class Product1 implements Service{

 @Override

 public void service() {

  System.out.println("产品1服务中.....");

 }

}   

class ProductFactory1 implements ServiceFactory{

 @Override

 public Service getService() {

  // TODO Auto-generated method stub

  return new Product1();

 } 

}

class Product2 implements Service{

 @Override

 public void service() {

  System.out.println("产品2服务中.....");

 }

}   

class ProductFactory2 implements ServiceFactory{

 public Service getService() {

  // TODO Auto-generated method stub

  return new Product2();

 } 

}

public class FactoryTest

{    

  public static void service(ServiceFactory src){

   Service s=src.getService();

   s.service() ;

  }

   public static void main(String []agrs){

    FactoryTest.service(new ProductFactory1())  ;

    FactoryTest.service(new ProductFactory2() ) ;

   }

}