Pattukkottai Arun

• Jul 21st, 2005

 

The J2EE Platform provides a component-based approach to the design, development, assembly, and deployment of enterprise applications.  
 
The J2EE platform is designed to provide server-side and client-side support for developing enterprise, multi-tier applications. Such applications are typically configured as a client tier to provide the user interface, one or more middle-tier modules that provide client services and business logic for an application, and backend enterprise information systems providing data management.  
 

Sumeeth R Tewar

• Jul 12th, 2006

 

In a j2ee application there are possibly following tiers.

Client Tier - Contains client side applets.

Web Tier -  Contains web components jsp, servlets.

Application tier - contains business logic ejbs.

Legacy Application  tier - contains back end legacy application and DBs.