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Java 2 Platform, Enterprise Edition

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Java 2 Platform, Enterprise Edition or J2EE is a Standard for developing distributed Multitier architecture applications, based on modular components. The standard uses several technologies, such as JDBC, or CORBA, and extends their functionality with Enterprise_Java_Beans, Java_Servlets, JavaServer_Pages and XML technologies. This allows the developer to create an Enterprise Application that is portable between platforms and scalable, while integrating with several legacy technologies.

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General APIs

The J2EE APIs includes several technologies that extend the functionality of the base J2SE APIs. Some of these are:

javax.ejb.*

The Enterprise Java Beans API defines a set of APIs that a distributed object container will support in order to provide persistence, remote communication (using RMI), concurrency control, and access control for distributed objects[?].

javax.servlet

The Servlets API defines a set of APIs between a web container and a servlet that is responsible for processing requests and issuing responses.

javax.servlet.jsp

The javax.servlet.jsp and javax.servlet.jsp.tagext packages define the JavaServer Pages API.

javax.naming

The javax.naming, javax.naming.directory, javax.naming.event, javax.naming.ldap and javax.naming.spi packages define the Java Naming and Directory Interface API.

java.sql, javax.sql

The java.sql and javax.sql packages define the Java Database Connectivity (JDBC) API

java.transaction.*

These packages define the Java Transaction API (JTA)

javax.xml.*

These packages define the JAXP API

javax.jms.*

These packages define the Java Message Service (JMS) API

Additional Information

More information on J2EE can be found at http://java.sun.com/j2ee/docs .



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