Spring FrameWork:
It is a lightweight multi-tier application Framework. It addresses the most of the infrastructural concerns that are required in implementing the enterprise applications
We can develop enterprise applications , no need of using EJBs
High level abstraction on top of J2EE
Replacement for EJB to implement distributed components in Java
J2EE is a integrated set of individual APIs fordeveloping enterprise applications
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Benefits of Spring Framework
Spring is Complete and Modular
Spring is open Source
Spring implemments teh design patterens that are accepted by many projects for solving various problems
Spring provides a better environment for Testing
As Spring is modular it supports incremental adoption
Spring provides Unified Configuration format to configure services from end to end of enterprise application.Avoids to create configurations/fromats of different formats
Spring eliminate the need of implementing the Singleton and Fact9ory patterns which are the most common patterns required to be implemented
Spring framework is divided into following modules (as per Spring 2.x)
1. Core Container(IoC Container)
2.AOP Module
3. DAO and JDBC Module
4.ORM Module
5.JEE Module
6.Web MVC Module
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