INTERVIEW QUESTIONS PEOPLESOFT DETAILS

Question: How does reset() and Validate() method struts work ?

Answer: reset(): reset() method is called by Struts Framework with each request that uses the defined ActionForm. The purpose of this method is to reset all of the ActionForm’s data members prior to the new request values being set.
Example:
/**
* Reset the form.
*/
public void reset(ActionMapping mapping, HttpServletRequest request) {

super.reset(mapping,request);
this.password = null;
this.username = null;
this.guest = null;
}

validate() : Used to validate properties after they have been populated; Called before FormBean is handed to Action. Returns a collection of ActionError as ActionErrors. Following is the method signature for the validate() method.

Example :
/**
* Validate the form’s input.
*/
public ActionErrors validate(ActionMapping mapping,
HttpServletRequest request) {

ActionErrors errors = new ActionErrors();

if(username == null){
errors.add(ActionErrors.GLOBAL_ERROR, new ActionError(”error.username.required”));
}
return errors;
}

reset(): reset() method is called by Struts Framework with each request that uses the defined ActionForm. The purpose of this method is to reset all of the ActionForm’s data members prior to the new request values being set.
Example:
/**
* Reset the form.
*/
public void reset(ActionMapping mapping, HttpServletRequest request) {

super.reset(mapping,request);
this.password = null;
this.username = null;
this.guest = null;
}

validate() : Used to validate properties after they have been populated; Called before FormBean is handed to Action. Returns a collection of ActionError as ActionErrors. Following is the method signature for the validate() method.

Example :
/**
* Validate the form’s input.
*/
public ActionErrors validate(ActionMapping mapping,
HttpServletRequest request) {

ActionErrors errors = new ActionErrors();

if(username == null){
errors.add(ActionErrors.GLOBAL_ERROR, new ActionError(”error.username.required”));
}
return errors;
} Source: CoolInterview.com

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