How can I avoid having too many arguments in Spring Java controllor -

in spring web application:

    @requestmapping(value = new) public string addproduct(@requestparam string name, @requestparam(required = false) string description,                          @requestparam string price, @requestparam string company, modelmap model,                          @requestparam(required = false) string volume, @requestparam(required = false) string weight) {     try {         productmanagementservice.addnewproduct(name, description, company, price, volume, weight);         model.addattribute("confirm", product_added);         return form_page;     } catch (numberformatexception e) {         logger.log(level.severe, invalid_value);         model.addattribute("error", invalid_value);         return form_page;     } catch (invaliduserinputexception e) {         logger.log(level.severe, e.getmessage());         model.addattribute("error", e.getmessage());         return form_page;     } } 

what possible ways reduce/bind total number of arguments.

create form class i.e

class myform{ string name; string price; string description; ...  // getters , setters included } 

and like

@requestmapping(value = new) public string addproduct(@modelattribute myform myform) 

instantiation of myform , binding of request parameters properties , adding modelmap done spring behind scenes.

source: spring docs

an @modelattribute on method argument indicates argument should retrieved model. if not present in model, argument should instantiated first , added model. once present in model, argument's fields should populated request parameters have matching names. known data binding in spring mvc, useful mechanism saves having parse each form field individually.