1.What is Model Driven Interceptors is used for? 2.what is the purpose of using Action support??

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Naga S

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Using ActionSupport class, we can implement Custom validation which validates at the server-side. We can write server side validation logic in validate() method.
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ModelDriven actions and adds the action's model on to the value stack.
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1. The modelDriven interceptor makes other model object as the default object of valuestack. Bydefault, action object is the default object of valuestack. To use the modelDriven interceptor, you need to implement ModelDriven interface in your action class and override its method getModel(). It...
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1. The modelDriven interceptor makes other model object as the default object of valuestack. Bydefault, action object is the default object of valuestack. To use the modelDriven interceptor, you need to implement ModelDriven interface in your action class and override its method getModel(). It is found in the default stack bydefault. So you don't need to specify it explicitely. 2.It is a convenient class that implements many interfaces such as Action, Validateable, ValidationAware, TextProvider, LocaleProvider and Serializable . read less
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ModelDriven Interceptor is used to inject the model object into Action ie Action's Value Stack so that Action can be able to use it. Struts 2 provides the flexibility of defining the attributes and their setter/getter methods in Action class itself and outside the Action class like java bean. To set...
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ModelDriven Interceptor is used to inject the model object into Action ie Action's Value Stack so that Action can be able to use it. Struts 2 provides the flexibility of defining the attributes and their setter/getter methods in Action class itself and outside the Action class like java bean. To set the attributes to the field of some other bean object, Action class must implement ModelDriven interface and Model-Driven Interceptor must be applied to that Action class. read less
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Bank PO Teacher

Hi, U can get the related information of your question from the following link: http://www.javatpoint.com/struts-2-modeldriven-interceptor-example This should give u valuable information.
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Software Professional Trainer with 26+ years of Experience in Software Design and Development

Model Driven Interceptor is used to inject the model object into Action ie Action's Value Stack so that Action can be able to use it.
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Java/j2ee trainer, AWS, spring cloud and spring boot , angularjs

ModelDriven Interceptor is used to inject the model object into Action ie Action's Value Stack so that Action can be able to use it. Struts 2 provides the flexibility of defining the attributes and their setter/getter methods in Action class itself and outside the Action class like java bean. To set...
read more
ModelDriven Interceptor is used to inject the model object into Action ie Action's Value Stack so that Action can be able to use it. Struts 2 provides the flexibility of defining the attributes and their setter/getter methods in Action class itself and outside the Action class like java bean. To set the attributes to the field of some other bean object, Action class must implement ModelDriven interface and Model-Driven Interceptor must be applied to that Action class. Model-Driven interceptor only pushes not null model object into Value Stack of the Action . We can use default interceptor stack modelDrivenStack or defaultStack which is defined in struts-default.xml file or alternately add ModelDriven interceptor in the acction class. read less
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Java Trainer

An interceptor that enables scoped model-driven actions. This interceptor only activates on actions that implement the ScopedModelDriven interface. If detected, it will retrieve the model class from the configured scope, then provide it to the Action.
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Master

Action Support class provides ready to use functionality of validation framework.
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ModelDriven actions and adds the action's model on to the value stack.
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