Spring Framework

Another framework that helps in developing J2EE applications is Spring Framework.

DESCRIPTION

Another framework that helps in developing J2EE applications is Spring Framework. But is it just another or one its kind among all? Lets us explore the answer to this mysterious question in the following bullets

  • Spring is developed using a bottom to top development approach that makes it ideal for test driven projects.
  • Spring is an important integration technology
  • Spring lays stress on finding paths to manage your business related projects.
  • Spring is both modular and comprehensive

These qualities are ideally served by spring framework which makes you answer the first question that it is not just another framework but potentially a one-stop for all your infrastructural concerns.

What does Spring Framework actually do?

Spring’s main objective is to make J2EE easier to use and encourage some good programming practices. It does this by enabling a POJO-based programming model that is applicable in vast array of environments. The Spring Framework includes several modules that provide a range of services: –

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  • Spring Core Container
    This is a very important module as it serves as Spring and provides spring containers like BeanFactory and ApplicationContext. The container can be configured by loading XML files or detecting specific Java annotation on configuration classes.Beans are the managed objects created by the container, the can be obtained using either dependency lookup or dependency injection. Dependency lookup is a pattern where a caller asks the container object for an object with a specific name or of a specific type whereas in dependency injection the container passes objects by name to other objects, via constructors, properties, or factory methods.
  • Aspect Oriented Programming (AOP) Framework
    the AOP framework is basically used for modularization of aspect related concerns. The main intention behind its development was to provide basic AOP features without much complexity in design, implementation or configuration. This framework is proxy-based so it is configured at run-time only.
  • Data Access Framework
    Spring provides support for all data access frameworks namely- JDBC, iBatis/MyBatis, Hibernate, JDO, JPA, Oracle, TopLink, Apache OJB and Apache Cayenne among others.It offers features like resource management, exception handling, transaction participation, resource unwrapping, and abstraction for BLOB and CLOB handling. These features can be used while using template classes provided by Spring for each supported Framework.
  • Transaction Management Framework
    Why we need a Transaction Management? TMF is needed to bring a sense of abstraction to the Java platform. It helps us in:-

    • Working with savepoints.
    • Working in nested transactions
    • Working in almost all Java supported platforms.
    • Working with local and global transactions
  • Model-view-controller Framework
    Spring MVC is a request-based framework and is responsible for defining strategy interfaces enabling its users to write a cleaner front-end code. All interfaces are tightly coupled to Servlet APIs. Some important interfaces offered by MVC are- Controllers, HandlerAdapter, HandlerInterceptor, HandlerMapping, LocaleResolver, MultipartResolver, etc.
  • Remote-access Framework
    the main function of this framework is to ease configuration and use of RPC technologies with the help of Inversion Control and AOP framework.

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