Java Factory Pattern: Key Characteristics

Some characteristics of the Java factory pattern include:

1. The process of creating objects is encapsulated: the factory pattern encapsulates the creation process of objects in a factory class, allowing clients to obtain the desired object by simply calling methods of the factory class, without needing to worry about the details of object creation.
2. Modularization: The factory pattern separates the creation and use of objects, decoupling client code from the specific object creation process, which improves the maintainability and extensibility of the code.
3. Implementing polymorphism through interfaces: The factory pattern usually uses interfaces or abstract classes to define object creation methods, allowing clients to interact with concrete factory classes through interfaces or abstract classes, thereby achieving polymorphism.
4. Simplify client code: The client only needs to obtain objects through the factory class method, without directly calling the constructor of specific objects, thereby simplifying client code.
5. Strong scalability: The factory pattern can expand the system’s functionality by adding new concrete factory and product classes, adhering to the open-closed principle.
6. Hide details: The factory pattern encapsulates the process of object creation in a factory class, so that clients only need to focus on the method of obtaining the object, without having to worry about the specific implementation details of the object.
7. Reduced coupling: The factory pattern separates the creation and use of objects, reducing the coupling between client code and specific objects, thereby enhancing the flexibility and maintainability of the system.