Using standard Java objects instead of complex, container-dependent EJBs.
Prioritizing architectures that are easy to unit test outside of a heavy application server. Key Technical Alternatives Expert One-on-One J2EE Development without EJB
Published in 2004 by Rod Johnson and Juergen Hoeller, is a seminal text that fundamentally reshaped the Java landscape. It famously challenged the "orthodoxy" of the time—specifically the reliance on complex Enterprise JavaBeans (EJB) —and provided the architectural blueprint that led to the creation and dominance of the Spring Framework. Core Philosophy: Simplicity and Productivity which simplifies testing and decouples code.
Allowing a container to manage object dependencies, which simplifies testing and decouples code. Expert One-on-One J2EE Development without EJB