From the course: Learning Java Enterprise Edition
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EJB introduction - Java EE Tutorial
From the course: Learning Java Enterprise Edition
EJB introduction
- [Instructor] Now, let's take a look at the diverse services added to Enterprise Java Beans by the container, and how access to the session bean is controlled. We'll see how the container configures beans using the concept of convention over configuration, and how you can, as a developer, gain back control over bean configuration through metadata specified in annotations. We'll also look at the difference stateless, stateful, singleton, and message driven beans, and the roles they play in the business tier of a typical application. EJB is a very broad topic, and we will not be able to cover all aspects in this short video, but by the end of the video, you should be able to have a pretty good jumping off point for further study. The Java E programming model has been simplified substantially since J2EE. Annotations have replaced the xml description files, convention over configuration has replaced the tedious manual configuration, and dependency injection hides the creation and look up…
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