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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.
For example, several GoF patterns, like the Factory method pattern, the Builder or even the Singleton are implementations of this concept. The Abstract factory pattern instead is a method to build collections of factories. In some design patterns, a factory object has a method for every kind of object it can create
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]
In a software design pattern view, lazy initialization is often used together with a factory method pattern. This combines three ideas: Using a factory method to create instances of a class (factory method pattern) Storing the instances in a map, and returning the same instance to each request for an instance with same parameters (multiton pattern)
Some examples of creational design patterns include: Abstract Factory pattern : a class requests the objects it requires from a factory object instead of creating the objects directly Factory method pattern : centralize creation of an object of a specific type choosing one of several implementations
In software engineering, a software design pattern or design pattern is a general, reusable solution to a commonly occurring problem in many contexts in software design. [1] A design pattern is not a rigid structure that can be transplanted directly into source code. Rather, it is a description or a template for solving a particular type of ...
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Emilhdiaz 22:42, 12 October 2012 (UTC) The Java example of the Factory Method Pattern is a bit vague and can easily be confused for the Builder Pattern. I know this example is essentially a Builder that makes use of a Factory Method, but I think for individuals new to the subject and looking for information, this makes the learning experience ...