               value="Throw NullPointerException!"/>


                <p:ajaxExceptionHandler type="jakarta.faces.application.ViewExpiredException"
                                        update="exceptionDialog"
                                        onexception="PF('exceptionDialog').show()" />

                <p:ajaxExceptionHandler type="java.lang.NullPointerException"
                                        update="exceptionDialog"
                                        onexception="PF('exceptionDi