June 2018
Intermediate to advanced
596 pages
12h 39m
English
Content preview from Java EE 8 Development with Eclipse - Third Edition
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Accessing session beans using dependency injection
You can access session beans either using the @EJB annotation (which injects the bean in the client class) or by performing the Java Naming and Directory Interface (JNDI) lookup. EJB containers are required to make JNDI URLs of the EJBs available to clients.
Injecting session beans using @EJB works only for managed components, that is, components of the application whose life cycle is managed by the EJB container. When a component is managed by the container, it is created (instantiated) and destroyed by the container. You do not create managed components using the new operator. JEE-managed components that support direct injection of EJBs are servlets, managed beans of JSF pages, and EJBs ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.