The factory method pattern is a creational design pattern that uses factory methods to create objects. This pattern is used to encapsulate object creation logic in a class, making it easier to change the object creation process later.
In Spring Boot development, the factory method pattern can be used to create beans. Beans are objects that are managed by the Spring container. They are created, initialized, and destroyed by the Spring container.
Beans are usually created by calling a factory method on a bean factory. A bean factory is a Spring container that contains bean definitions and creates beans. When a bean is created by a bean factory, it is said to be "instantiated."
The factory method pattern is used to instantiate beans in Spring. The pattern is also known as the "container."
A factory method is a method that creates objects. In Spring, a factory method is a method that is called on a bean factory to create a bean.
Bean factories are usually created by calling the getBeanFactory()
method on a ApplicationContext
. The ApplicationContext
is a Spring container that contains bean definitions and creates beans.
Bean factories can also be created by calling the getDefaultListableBeanFactory()
method on a ClassPathXmlApplicationContext
. The ClassPathXmlApplicationContext
is an ApplicationContext
that loads bean definitions from an XML file.
In Spring, the factory method pattern is used to instantiate beans. The pattern is also known as the "container."
Beans are usually created by calling a factory method on a bean factory. A bean factory is a Spring container that contains bean definitions and creates beans. When a bean is created by a bean factory, it is said to be "instantiated."
The factory method pattern is used to instantiate beans in Spring. The pattern is also known as the "container."
There are several benefits to using the factory method pattern:
The factory method pattern encapsulates object creation logic in a class, making it easier to change the object creation process later.
The factory method pattern is flexible. It allows you to change the object creation process without changing the code that uses the objects.
The factory method pattern is easy to use. You don't need to know the details of the object creation process to use the objects.
There are a few disadvantages to using the factory method pattern:
The factory method pattern can make your code harder to read.
The factory method pattern can make your code harder to debug.
The factory method pattern can make your code harder to unit test.
You should use the factory method pattern when:
You need to encapsulate object creation logic in a class.
You need to change the object creation process without changing the code that uses the objects.
You need to use an object without knowing the details of the object creation process.