Struts-config.xml:::::::::::::::::::
<plug-in className="org.apache.struts.validator.ValidatorPlugIn">
        <set-property property="pathnames" value="/WEB-INF/validator-rules.xml,/WEB-INF/validation.xml" />
    </plug-in>
    
validation.xml:::::::::::::
<formset>
        <!-- An example form -->
        <form name="crudForm">
            <field property="name" depends="required">
                <arg key="crudform.name"/>
            </field>
        </form>
    </formset>
jsp::::::::::
<html:javascript formName="crudForm" dynamicJavascript="true" staticJavascript="true"/>
<div id="crudDetailDialog">
 <html:form action="/save.do" method="POST" styleId="crudForm" >
  <div id="crudDetailValidationMessages"><html:errors/></div>
  
  CrudId:<html:text property="crudId" /> 
  Name: <html:text property="name" /> 
  
  <input name="submit" type="submit" value='login' >
 </html:form>
</div>
form:::::::::::::::::::::::
CRUDForm extends ValidatorForm {