Spring commandClass


i would like to know about Spring commandClass.When,where,How we use it. advantages, disadvantages of using it.  I was not clear on this concept. thanks in advance
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gudii9Asked:
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for_yanCommented:

CommandClass is the class associated with the Form and
its properties are assocated with Form fields

A good example of the Spring Command class (User)  underlying the web form
is given in this short article:

http://www.vaannila.com/spring/spring-simple-form-controller-1.html

also read

http://www.ibm.com/developerworks/web/library/wa-spring3/

The commandClass and commandName tags determine the bean that will be active in the view page. For example, the loginCommand bean will be accessible through login.jsp, which is the application's login page. Once the user submits the login page, the application can retrieve the form data from the command object in the onSubmit() method of the LoginBankController.
(see code abive these words in the link above)

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