Was ist Spring
Spring is a free and open-source Java framework.
It can be used to build and define application infrastructure. Released in 2002, it was intended as a replacement for Enterprise JavaBeans. Spring made it easier to develop enterprise applications thanks to its aspect-oriented programming, POJO (Plain Old Java Object), and dependency injection techniques.
It produces high performing, easily testable, and reusable code. As such, Spring is used by many developers worldwide. Another one of its benefits is its small size: the basic version takes up only 2MB.