SPRING - The Framework - Part I
Spring is a lightweight container and framework to develop and deploy the enterprise application. It is an alternative for Enterprise Java Beans(EJB). It reduce the complexity behind developing EJB's, and it uses only Plain Old Java Objects(POJOs) as the components.
Spring Architecture:
if you think Spring is an framework in the place of Struts, you have wrong conception about the Spring . Spring is not only a framework, also it is an container to develop high end enterprise applications. Unlike EJB, it doesn't come up with more complex architecture rather it is a simple framework to use in our application with all other services(Transaction,Security,etc.) wrapped up your code. All the services are bundled in the different jar files and you just add the required files into your project.
Spring uses Plain Old Java Object(POJO) paradigm to implement the services needed for your application. This facilitate the use of Spring framework out of the container. Easy to Unit Test the Spring enabled applications. Another salient feature of Spring is, it allows us to easily integrate with other frameworks like Struts, WebWorks, Hibernate, etc.
Spring is built using two programming techniques : Inversion of Control(IoC) and Aspect Oriented Programming(AOP). In my next blog i will write about IoC in detail. Spring is extensively implemented in the Banking solutions.
This framework become more popular amoung the J2EE developers becuse of its simplicity and its more flexible to add the persistance layer which ever you want for your application(ie,Hibernate, DAO,etc). Unlike EJBs it need not force you to add all the service to the container, you have the control of adding services to your application.
The main pitfall of EJB is for an simple EJB also you have to bare the cost of container servies. But in spring this overhead is reduced. Every service has been modulrized and you have the option to add into your application. For your convenience, spring framework gives all the services in the different jar files. You can download it from here.
Also Spring gives you the MVC pattern to build your web application. This feature makes spring stand out from the other frameworks. Spring contains both container and framework. It gives the better way to integrate with EJBs and Struts framework. Those who feel EJB is more complicated, Spring will be the answer.
Spring Architecture:
if you think Spring is an framework in the place of Struts, you have wrong conception about the Spring . Spring is not only a framework, also it is an container to develop high end enterprise applications. Unlike EJB, it doesn't come up with more complex architecture rather it is a simple framework to use in our application with all other services(Transaction,Security,etc.) wrapped up your code. All the services are bundled in the different jar files and you just add the required files into your project.
Spring uses Plain Old Java Object(POJO) paradigm to implement the services needed for your application. This facilitate the use of Spring framework out of the container. Easy to Unit Test the Spring enabled applications. Another salient feature of Spring is, it allows us to easily integrate with other frameworks like Struts, WebWorks, Hibernate, etc.
Spring is built using two programming techniques : Inversion of Control(IoC) and Aspect Oriented Programming(AOP). In my next blog i will write about IoC in detail. Spring is extensively implemented in the Banking solutions.
This framework become more popular amoung the J2EE developers becuse of its simplicity and its more flexible to add the persistance layer which ever you want for your application(ie,Hibernate, DAO,etc). Unlike EJBs it need not force you to add all the service to the container, you have the control of adding services to your application.
The main pitfall of EJB is for an simple EJB also you have to bare the cost of container servies. But in spring this overhead is reduced. Every service has been modulrized and you have the option to add into your application. For your convenience, spring framework gives all the services in the different jar files. You can download it from here.
Also Spring gives you the MVC pattern to build your web application. This feature makes spring stand out from the other frameworks. Spring contains both container and framework. It gives the better way to integrate with EJBs and Struts framework. Those who feel EJB is more complicated, Spring will be the answer.
posted by vinod kumar at 9:04 PM
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