Over a million developers have joined DZone.
{{announcement.body}}
{{announcement.title}}

Free EJB3 Cheatsheet from DZone Now Available

DZone's Guide to

Free EJB3 Cheatsheet from DZone Now Available

· Java Zone
Free Resource

Learn how to troubleshoot and diagnose some of the most common performance issues in Java today. Brought to you in partnership with AppDynamics.

DZone continues its Refcardz series with a new, free PDF cheatsheet on dependency injection and EJB3. Written by EJB expert author, Debu Panda, it covers all the key points you need to know. The 'Dependency Injection in EJB 3' Refcard is useful for those building enterprise Java applications with EJB 3 and JPA. It lists out all the metadata annotations, describes them with examples and provides descriptions for XML elements that you can use for injection.

Dependency injection allows you to simply declare component dependencies and let the EJB container deal with the complexities of instantiating, initializing, and sequencing resources and supplying service or resource references to clients as required. Development frameworks like Spring framework originally popularized dependency injection. In EJB 3, you may think of dependency injection as the inverse of JNDI. It is the responsibility of the container to inject an object based on the dependency declaration.


Download Dependency Injection in EJB 3 here

Understand the needs and benefits around implementing the right monitoring solution for a growing containerized market. Brought to you in partnership with AppDynamics.

Topics:

Opinions expressed by DZone contributors are their own.

{{ parent.title || parent.header.title}}

{{ parent.tldr }}

{{ parent.urlSource.name }}