How to throw a CustomException in JSF 2.0 and catch it in the CustomHandler

Question

Hi,
I want to throw a custom exception "AppException" in my controller "ManagedBean", where this AppException extends Exception. And to catch it in my CustomExceptionHandler.
The problem is that when I go to the CustomExceptionHandler, I get the exception as "FacesException" not "AppException "
<factory>
<exception-handler-factory>com.web.common.exceptions.DefaultExceptionHandlerFactory</exception-handler-factory>
</factory>
public class DefaultExceptionHandlerFactory extends ExceptionHandlerFactory {
public ExceptionHandler getExceptionHandler() {
ExceptionHandler eh = new DefaultExceptionHandler(parent.getExceptionHandler());
return eh;
public class DefaultExceptionHandler extends ExceptionHandlerWrapper {
public void handle() throws FacesException {
Iterator i = getUnhandledExceptionQueuedEvents().iterator();
while (i.hasNext()) {
ExceptionQueuedEvent event = (ExceptionQueuedEvent) i.next();
ExceptionQueuedEventContext context =
(ExceptionQueuedEventContext)event.getSource();
//obtain throwable object
Throwable t = context.getException();
I need to do some action only when this AppException is thrown
The only I can do that is through
if(t.getCause().toString().indexOf("com.exceptions.AppException")!=-1){
//do some action
But I want to do something like
if(t instanceof AppException){
@ManagedBean(name = "loginController")
@ViewScoped
public class LoginController {
public String login() throws AppException {
throw new AppException ();
Any help?
Edited by: user on Mar 25, 2012 2:47 AM

Answer 1

For now, just use an object factory, like the builder classes or FXML. If you would prefer that JavaFX implement the Cloneable interface, try filing an issue at Jira.
It looks like they already considered something, but decided to drop it unless someone expresses a need: http://javafx-jira.kenai.com/browse/RT-137