EJB

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EJB

EJB

(Enterprise JavaBeans) A software component in the Java EE platform, which provides a pure Java environment for developing and running distributed applications. EJBs are written as software modules that contain the business logic of the application. They reside in and are executed in a runtime engine called an "EJB Container," which provides a host of common interfaces and services to the EJB, including security and transaction support. At the wire level, EJBs look like CORBA components.

Three Types of EGBs
The three types of EJBs are: (1) session beans perform processing, (2) entity beans represent data, which can be a row or a table in a database, and (3) message driven beans are generated to process Java Messaging Service (JMS) messages.

Very Versatile
EJBs inherently provide future scalability and also allow multiple user interfaces to be used. For example, both a Web browser and a Java application could be used to access EJBs, or one could be switched for the other at a later date. However, if these are not important issues, servlets, JSPs and regular Java applications can be used for business logic rather than EJBs. See Java EE, EJB container, EJB local interface, JavaBeans, distributed objects and component software.
References in periodicals archive ?
It is a complete solution for Java platforms including: mobile computing, Internet applications, Web servers and Enterprise JavaBean (EJB) servers.
AFP chose Borland Enterprise Server, AppServer(TM) Edition and JBuilder for their reliability, speed, compliance with standards, Enterprise JavaBean re-usability and above all, the availability of J2EE(TM) development and implementation.
Enterprise JavaBean for CICS - TCP/IP and APPC: This EJB enables transparent communications between remote applications managed by CICS and Java application server programs.
Tengah's Integrated Services Maximize Enterprise JavaBean Capabilities
With Enterprise JavaBean support, Netscape Application Server will enable enterprise customers to build and deploy applications rapidly by leveraging the wealth of tools, vendors and independent software vendors who are developing application components and services based on the new Enterprise JavaBeans standard.
has announced plans to hold a seminar on Enterprise JavaBeans and the J2EE (Java 2 Platform, Enterprise Edition) programming model for developers, technical consultants and project managers that are interested in learning more about these scalable component architectures.
Increasing developer productivity was critical, and I looked for a development environment that supported Enterprise JavaBeans, Web Services, and the BEA(R) WebLogic(R) application server.
Stack presented 'Establishing a Strategy for the Reuse of Enterprise JavaBeans Architecture-Based Components' to developers who came to learn the steps necessary for successfully implementing reusable Enterprise JavaBeans components.
Java, J2EE, Enterprise JavaBeans and EJB are trademarks or registered trademarks of Sun Microsystems, Inc.
com is playing a major role in the adoption of Enterprise JavaBeans technology," states George Paolini, vice president, Java Community Development at Sun Microsystems.
HIGHLIGHTS: Enterprise JavaBeans Architecture-Based Components on Friday,
Sun, Sun Microsystems, the Sun logo, Java, J2EE, JavaServer Pages, JSP, Enterprise JavaBeans, EJB, Java DataBase Connectivity, JDBC, SunTone and The Network Is The Computer are trademarks or registered trademarks of Sun Microsystems, Inc.

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