What is the advantage of factory design pattern?
Advantage of Factory Design Pattern Factory Method Pattern allows the sub-classes to choose the type of objects to create. It promotes the loose-coupling by eliminating the need to bind application-specific classes into the code.
What are the disadvantages of factory design pattern?
One disadvantage of the Factory Method pattern is that it can expand the total number of classes in a system. Every concrete Product class also requires a concrete Creator class. The parameterized Factory Method avoids this downside.
What can be the disadvantages of factory method?
A potential disadvantage of Factory methods is that clients might have to sub-class the creator class just to create a particular concrete product object. Subclassing is fine when the client has to subclass the creator class anyway, but otherwise, the client now must deal with another point of evolution.
Is the Factory pattern useful?
It is useful. Any class deferring the object creation to its sub class for the object it needs to work with can be seen as an example of Factory pattern.
Why factory pattern is used in Java?
Factory design pattern is used to create objects or Class in Java and it provides loose coupling and high cohesion. Factory pattern encapsulate object creation logic which makes it easy to change it later when you change how object gets created or you can even introduce new object with just change in one class.
What is factory design pattern in Java?
The Factory Design Pattern or Factory Method Design Pattern is one of the most used design patterns in Java. According to GoF, this pattern “defines an interface for creating an object, but let subclasses decide which class to instantiate. The Factory method lets a class defer instantiation to subclasses”.
What are the pros and cons of factory design pattern?
The pros and cons of the factory method design pattern
| Advantages | Disadvantages |
|---|---|
| Modular expandability of the application | High number of required classes |
| Good testability | Extension of the application is very elaborate |
| Significant method names |
What is a factory design pattern in Java?
What is a factory in Java?
Factory, as the name suggests, is a place to create some different products which are somehow similar in features yet divided into categories. In Java, factory pattern is used to create instances of different classes of the same type.
What problem does factory pattern solve?
Factory method is a creational design pattern which solves the problem of creating product objects without specifying their concrete classes. Factory Method defines a method, which should be used for creating objects instead of direct constructor call ( new operator).
What are the types of factory pattern?
the abstract factory pattern, the static factory method, the simple factory (also called factory).
What are the advantages of simple factory?
The Advantages of the Simple Factory Pattern
- It provides an elegant way to abstract your code so there’s less visual clutter.
- It allows you to introduce specialized, focused classes with a single purpose (which is great if you follow the SOLID principles)
