Spring 5 Design Patterns

Implementing the Abstract Factory Pattern in Spring (FactoryBean interface)

The Spring Framework provides the FactoryBean interface as an implementation of the Abstract Factory Pattern. A FactoryBean is a pattern to encapsulate interesting object construction logic in a class. The FactoryBean interface provides a way to customize the Spring IoC container's instantiation logic. You can implement this interface for objects that are themselves factories. Beans implementing FactoryBean are auto-detected.

The definition of this interface is as follows:

    public interface FactoryBean<T> { 
     T getObject() throws Exception; 
     Class<T> getObjectType(); 
     boolean isSingleton(); 
   } 

As per the preceding definition of this interface, the dependency injection ...