This chapter introduced the J2EE architecture, J2EE components, and presents an overview of enterprise beans. You learned the basic concepts behind enterprise beans and how the container manages different beans in the J2EE architecture. You also learned how an enterprise bean might be used in a distributed architecture.
Here are the key points from this chapter.
The J2EE platform gives you a multitiered application model to develop distributed components.
A three-tier architecture places web components and business components in the middle tier. The presentation tier contains client applications and the database tier contains database programs.
The J2EE components consist of technologies like enterprise beans, servlets, and ...