Essential Points

The following summarizes the most important points described in this chapter:

  • Applications that are distributed and require transactions, security, and resource management are suitable for implementation using J2EE technology.

  • JSP and servlets are well suited to implement the user component aspect of a J2EE application.

  • EJBs are suited to the implementation of business logic in a J2EE application.

  • Application aspects that are suited to implementation using EJB are persistence, transaction, support, and security.

  • The classes required to implement an EJB are: javax.ejb.EJBHome, javax.ejb.EJBObject, and your method implementations using either javax.ejb.Session or javax.ejb.Entity.

  • Entity beans are a shared resource that is persisted ...

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