Spring framework

The Spring framework is a huge one with several modules. The first version of the framework was released in 2003, and since then, there have been four major releases delivering new and enhanced features. Currently, Spring is the de facto enterprise framework used, perhaps more widely than the standard EJB 3.0

Spring supports dependency injection, Aspect-Oriented Programming (AOP), persistence for SQL and NoSQL databases in a conventional and Object Relational Mapping way, transactional support, messaging, web programming, and many other features. You can configure it using XML configuration files, annotations, or Java classes.

Architecture of Spring

Spring is not monolithic. You can use a part of it, or only some of the features. You can include some of the modules of Spring that you need and leave out others. Some modules depend on some others, but Gradle, Maven, or some other build tool handles that.

The following image shows you the modules of the Spring framework for version...