What is J2EE

What is J2EE ?

Ø J2EE(java 2 Enterprise Edition) is one of the three Java platform from sun micro system.

            Other two’s are :   (1) J2SE(Java 2 Standard Edition)

                                                 (2) J2ME(Java 2 Mobile Edition)

Ø J2EE is a collection of so many Java based technologies.

Ø J2EE technologies broadly divided into 2 catagories

o   Component technologies

o   Service technologies

Component technologies are :

o   Servlets

o   Jsp

o   EJB(enterprise java beans)

·        Servlets and jsp are know as web technologies

·        EJB is known as distributed technologies

·        A servlet and jsp are web components developed by web component developers

·        EJB’s are develooped by business component developers .EJB’s are knows as business components.

Service technologies are :

o   JMS (Java Messaging Service)

o   JTS (Java Transaction Service)

o   JAAS (Java Authentication and autherisation Service)

o   JNDI (Java Naming and directory Interface)

o   Java Mail