Java Enterprise and Web Technologies

Deployer's output are enterprise beans that have been customized for the target operational environment.

The home interface for an enterprise bean defines the bean's life cycle methods.

With Ajax, when a user clicks a button, you can use java script and DHTML to immediately update the UI, and spawn an asynchronous request to the server to perform an update or query a database.

These are an efficient and powerful solution for creating dynamic content for the web.

It is very common for model components to provide interfaces to databases or back-end systems.

Filters were officially introduced in the servlet 2.3 specification.

Java struts falls under the Jakarta subproject of the apache software foundation and comes with an open source licence.

It develops reusable enterprise beans that typically implement business tasks or business entities.

The stateful session bean is used when the bean's state must be initialized when it is created.

Session beans will disappear if the server is shutdown and restarted.

It describes the case in which the application assembly step occurs before the deployment of the enterprise beans.

It is a domain expert who composes applications that use enterprise beans.

Controller components take data from the user and update a database through model components.

A good rule of thumb is that entity beans model business concepts that can be expressed as nouns.

To perform his role, the deployer uses tools provided by the EJB container provider.