J2EE is Oracle's enterprise Java computing platform that provides APIs for object relational mapping, distributed applications, and multi-tier architectures. The J2EE development lifecycle involves developing components for persistence, business logic, and presentation; configuring deployment descriptors; building packages; and deploying packages on a J2EE server container. Benefits of J2EE include a concept-based architecture, code sharing, portability, security, and faster time to market. J2EE components include client side, web, business, and server side components. J2EE extends Java SE and is used for server-side applications while Java is mainly used for desktop applications.

1. J2EE OvErviEw

2. what is J2EE
• J2EE is Oracle's enterprise java computing platform
• Java 2 Enterprise edition is a collection of APIs that can
be used on develop application or system
• J2EE extends the java platform, Standard Edition(Java
SE/J2SE), providing an API for object relational mapping,
distributed and multi-tier architectures

3. J2EE architEcturE

5. J2EE DEvElopmEnt lifEcyclE
• Develop components for
• - Persistence(Entities)
• - Business Logic (EJBs)
• - Presentation(JSF, XHTML)
• Configure/Prepare deployment descriptors
• Build Components in packages(JARs, WARs, EARs)
• Deploy packages on container(J2EE Server)

7. Benefits of J2ee
• Concept based development architecture
• Sharing 3rd party code Fully coverage W3C standards
• Cross platform and portability
• Open Source libraries
• Flexible Security model
• Faster solutions delivery time to market

8. J2ee Components
• Client Side Components
• Web Components
• Business Components
• Components Run on Server side

9. DifferenCe
Between Java anD J2ee
Java
• Java Standard Edition
• It’s mainly used for
desktop applications
• It supports for core java
• Java first version launch
on 1995
J2ee
• Java 2 Enterprise Edition
• It’s used for application run on
servers
• It’s support for JSP(Java
Server Page)
• J2EE first version launch on
1999

10. You Want More InforMatIon

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