[jboss-user] [JBoss Portal] - a JSF Validator cannot be cast to javax.faces.validator.Vali

webmascon do-not-reply at jboss.com
Sun Mar 2 17:22:03 EST 2008

JBoss portal is using idenity portlet to register new users and edit profiles for existing users. I added a my own JSF validator to the identty portlet which when opened now throws the following exception: 

java.lang.ClassCastException: com.kachanov.test004.validators.MyValidator cannot be cast to javax.faces.validator.Validator 
at org.apache.myfaces.application.ApplicationImpl.createValidator(ApplicationImpl.java:613) 

The code of my validator is: 

package com.kachanov.test004.validators; 

import javax.faces.application.FacesMessage; 
import javax.faces.component.UIComponent; 
import javax.faces.context.FacesContext; 
import javax.faces.validator.Validator; 
import javax.faces.validator.ValidatorException; 

public class MyValidator implements Validator { 

public void validate(FacesContext arg0, UIComponent arg1, Object arg2) throws ValidatorException { 

System.out.println("testing this validator"); 


So please thell me how can it bee that a class that implements Validator cannot be cast to javax.faces.validator.Validator?????? 

Is in't it against basic design of Java language? 

I reported this to JIRA and got this answer:
Not a bug. Please see classloading rules. 
It looks like your application embeds JSF libs, while they are already available in JBoss AS. 
But I have no idea where to look for solution

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