Sun has a valuable J2EE 1.4 tutorial. This is really good for newbies who want to study J2EE Architecture. Click here to view the tutorial.
Enterprise JavaBeans Sunday, Oct 8 2006
J2EE 3:18 am
Difference between JavaBeans and Enterprise JavaBeans
* JavaBeans are components built in Java that can be used on any tier in an application. They often thought of in relationship to servlets, and as GUI components.
* Enterprise JavaBeans are specials, server-side components used for building the business logic and data access functionality of an application.
Why use EJBs?
Even though EJBs are difficult to understand for novice, it is a powerful technology. It is scalable and flexible. The EJBs share the following tasks:
* Client Communication
* Session State Management
* Transaction Management
* Database Connection Management
* User Authentication and Role-based Authorization
* Asynchronous Messaging
* Application Server Administration
Types of EJBs
1. Session Bean (Stateless and Stateful)
2. Entity Bean
3. Message-Driven Bean
Deploying Web Application to Tomcat 4.0 Wednesday, May 10 2006
J2EE 7:42 pm
Deploying Web Applications to Tomcat by James Goodwill — James Goodwill takes us through the web application deployment process for the Apache Tomcat Web server.
