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In object-oriented programming, the factory method pattern is a design pattern that uses factory methods to deal with the problem of creating objects without having to specify their exact classes. Rather than by calling a constructor , this is accomplished by invoking a factory method to create an object.
UML class diagram. The abstract factory pattern in software engineering is a design pattern that provides a way to create families of related objects without imposing their concrete classes, by encapsulating a group of individual factories that have a common theme without specifying their concrete classes. [1]
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In class-based programming, a factory is an abstraction of a constructor of a class, while in prototype-based programming a factory is an abstraction of a prototype object. A constructor is concrete in that it creates objects as instances of one class, and by a specified process (class instantiation), while a factory can create objects by instantiating various classes, or by using other ...
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In Factory design pattern Factory should not extend an abstact Factory, whereas in current diagram ConcreteCreator extends Creator. This makes ConcreteCreator/Creator an Abstract Factory design pattern. Wrong. An Abstract Factory describes the interface for creation a set of family objects. Sub-classes override these methods to concrete related ...
Object-oriented design patterns typically show relationships and interactions between classes or objects, without specifying the final application classes or objects involved. Define application framework (if applicable): An application framework is usually a set of libraries or classes that are used to implement the standard structure of an ...
Larman states that "the critical design tool for software development is a mind well educated in design principles. It is not UML or any other technology." [3]: 272 Thus, the GRASP principles are really a mental toolset, a learning aid to help in the design of object-oriented software.