The limitations of EJB2 led to the development of the extremely popular Spring and Hibernate frameworks. These frameworks replaced the cumbersome EJB2 programming model with a nimble, non-invasive Plain Old Java Object (POJO) –based model. But, now, the EJB3 specification has embraced many of the ideas made popular by Spring and Hibernate including POJOs, transparent persistence and dependency injection.

So what’s the future of Spring and Hibernate? Are they obsolete? In this presentation, you will learn the answers to these and other questions. We describe how EJB 3 persistence compares to Hibernate and how EJB3 services such as transaction management and dependency injection compare with those provide by Spring. You will learn the benefits and drawbacks of each of these frameworks.

Object-oriented design (OOD) is good way to tackle the complexity of modern applications. Yet many complex, enterprise Java applications are written in a procedural style. One reason is because EJB2 created too many obstacles to using object-oriented design techniques. Fortunately, enterprise Java technologies have improved. Plain Object Java Objects (POJOs) and object/relational mapping frameworks such as Hibernate, JDO and EJB3 led to the revival of OOD.

In this presentation, you will learn how to implement business logic using a rich POJO domain model. We will compare and contrast a procedural design with an object-oriented design and describe the benefits of OOD. You will learn how non-invasive frameworks provide dependency injection and persistence for a domain model.