Out of many reasons of J2EE for not being an exhaustive success, one is its complexity. While using this platform, it requires tedious effort to develop which seem a bit bothersome when it comes to evaluation of its performance. The Spring framework makes development of J2EE easier. This open source framework, although applicable with many other platforms, is especially useful in developing J2EE application.
The use of distributed object model makes J2EE code complex and repetitive. Codes like JNDI lookup, Transfer Objects and so on appears to be quite “not appropriate” to be maintained and written for any active use in the application. These practice of code duplication and excessive complexity could be addressed by bringing J2EE from the realms of a tool enabled code generator to a framework model of application development. Frameworks are flexible as single pieces of codes can be modified without any change to many classes. Spring Framework minimizes the complexities of J2EE coding by simplifying the overall process of development.
The basis of Spring Framework is Inversion of Control (IoC) that configures application components and manage Java objects. It passes required objects to the program beforehand instead of a need to write lengthy codes to create specific functions. Framework codes calls application codes making the process a lot easier than that of application codes calling framework codes, for which lines of class defined codes are required.
Spring follows aspect oriented programming. Therefore, this could be used as a versatile method to affect a large area of classes and object hierarchy. Unlike object oriented, aspect oriented programs can address particular concerns of the system. Transaction management, failure monitoring and logging are some of the typical aspects of a system. Spring unifies several transaction management API’s and coordinates transaction for Java Objects.
Therefore Spring is a right choice for working with J2EE. It simply solves the issues that made J2EE unpopular.