JOnAS – a Java Application Server

JOnAS (Java Open Application Server) is an open source Java EE applica-tion server which has been released free of cost under the terms of the open source GNU General Public License. JOnAS is the most widely used open source J2EE 1.4 ap-plication server. Applications deployed on Java EE application servers are assemblies of components dealing with user presentation or business logic.

Those two layers (presentation and logic) are composed of JSPs and Servlets for the first one and of different kinds of components (i.e., EJB for Enterprise Java Beans) for the second one. An EJB can be a Session Bean implementing application logic which converts and parse the XML data , an Entity Bean to simplify access to persistent data contained in databases, A Message Driven Bean that reifies a message queue polling (like JMS queues or topics) to be performed during the server runtime. These services are required in most enterprise applications. To access services, application component implementations are placed into containers. Those containers are used as the glue between components and technical services.

Read more about Enterprise Integration using JOnAS

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2. Know How Client Server Connection
3. Play Important Role In WLAN Security
4. Open Storage Networking
5. Security Between WLAN And APS