In this chapter, we will cover:
- Creating an EJB project
- Adding JPA support
- Creating Stateless Session Bean
- Creating Stateful Session Bean
- Sharing a service through Web Service
- Creating a Web Service client
Enterprise Java Beans (EJB) is a framework of server-side components that encapsulates business logic.
These components adhere to strict specifications on how they should behave. This ensures that vendors who wish to implement EJB-compliant code must follow conventions, protocols, and classes ensuring portability.
The EJB components are then deployed in EJB containers, also called application servers, which manage persistence, transactions, and security on behalf of the developer.
If you wish to learn more about EJBs, visit http://jcp.org/en/jsr/detail?id=318 or https://www.packtpub.com/developer-guide-for-ejb3/book.
For our EJB application to run, we will need the application servers.
Application servers are responsible for implementing the EJB specifications and creating the perfect environment for our EJBs to run in.
Some of the capabilities supported by EJB and enforced by Application Servers are:
- Remote access
- Transactions
- Security Scalability
NetBeans 6.9, or higher, supports the new Java EE 6 platform, making it the only IDE so far to bring the full power of EJB 3.1 to a simple IDE interface for easy development.
NetBeans makes it easy to develop an EJB application and deploy on different Application Servers without the need to over-configure and mess with different configuration files. It's as easy as a project node right-click.