why use spring? [closed]

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I am very much confused whether i should use spring

Reason - I want to develop a loosely coupled code which i think can b开发者_如何学JAVAe developed using Factory pattern and interfaces... and dependency injection can be implemented without using spring too...(by passing parameters).. why should i use spring then ?? Which are the other benefits of spring which i am unaware of..It would be really helpful if you could give me code samples comparing spring codes and simple java code(interfaces)...indicating how spring code is better...

Thanks

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You must go through Martin fowler's article http://martinfowler.com/articles/injection.html

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Spring offers many services other than its IOC container. Declarative transactions, JMS, Timing/Scheduling, AOP, a MVC framework, etc.

Whether or not it's the right technology for your project depends on what exactly your project requirements are, and the environment in which it will be run.

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Spring, among a lot of other things, is a library/framework for enabling dependency injection. You are welcome to code your own dependency injection library/framework and use that, thereby not requiring Spring.

If you create a powerful, annotation based, dependency injection library/framework, chances are, you'll come to something very similar to what spring already is.