我们需要将创建实例的责任与使用实例的责任分开, 使得 Example example=new Example(参数); 就是简单的责任:使用Example这个实例;而创建Example的任务就交给了Factory工厂模式. 按照传统方法,我们如果需要继承Example类,生成MyExample,就需要定义Example为Interface,然后,不断继承这个Interface,生成许多子类,造成以后代码维护...
六、 Abstract Factory模式在实际系统中的实现 Herbivore:草食动物 Carnivore:食肉动物 Bison:['baisn],美洲或欧洲的野牛 下面实际代码演示了一个电脑游戏中创建不同动物的抽象工厂。尽管在不同大陆下动物物种是不一样的,但动物间的关系仍然保留了下来。 //Abstract Factory pattern -- Real World example usingSystem...
*/publicclassConcreteFactory1extendsAbstractFactory{@OverridepublicProductAcreateProductA(){returnnewConcreteProductA1();}@OverridepublicProductBcreateProductB(){returnnewConcreteProductB1();}} 如下接着创建第二个具体工厂类,示例代码如下: 代码语言:java 复制 packagecom.example.javaDesignPattern.abstractFactory...
For each variant of a product family, we create a separate factory class based on theAbstractFactoryinterface. A factory is a class that returns products of a particular kind. For example, theModernFurnitureFactorycan only createModernChair,ModernSofaandModernCoffeeTableobjects. 现在,产品变体怎么样?
The concrete factory must create the correct objects for it's context, insuring that all objects created by the concrete factory have been chosen to be able to work correctly for a given circumstance.In this example we have an abstract factory, AbstractBookFactory, that specifies two classes, ...
Example The purpose of the Abstract Factory is to provide an interface for creating families of related objects, without specifying concrete classes. This pattern is found in the sheet metal stamping equipment used in the manufacture of Japanese automobiles. The stamping equipment is an Abstract Facto...
Since it is a broader, or a super-set, of the Factory Pattern, we will try to explain this with an example of the Factory Pattern and try to move on to the Abstract factory. So let's start with the Factory Pattern example.
2nd Example of Abstract Factory Method A factory method is simply a normal method call which can return an instance of a class. But they are often used in combination with inheritance such that a derived class overrides the factory method and return an instance of derived class. More often, ...
Pattern Componentization: The Factory Example Can Design Patterns be turned into reusable components? To help answer this question, we have performed a systematic study of the standard design patterns... K Arnout,B Meyer - 《Innovations in Systems & Software Engineering》 被引量: 37发表: 2006年...
Design Pattern - Abstract Factory Pattern - Abstract Factory patterns work around a super-factory which creates other factories. This factory is also called as factory of factories. This type of design pattern comes under creational pattern as this patte