Spring framework is a IoC container, IoC ( Inversion of Control ) like other frameworks, the beauty of Spring is Dependency Injection, Dependency Injection makes the Business logic independent of underlying frameworks and resolves or inject dependencies at runtime, that makes the business less complex and less dependent on underlying framework. Spring is the most popular framework when building Java Enterprise Edition (EE) applications. Its core feature is dependency injection which results in inversion of control. Spring and Hibernate ,an Open Source Object Relational mapping framework, is every Architect's dream framework. I can think of three major reasons why is this an indispensable tool for every J2EE (and even .NET) application. Spring and Hibernate can save your guts, and it can let you achieve some performance gains that you could hardly ever acheive by hand-coding. Spring and Hibernate generates very efficient queries very consistently. However, that is on
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