faces-config.xml

<?xml version='1.0' encoding='UTF-8'?>
<faces-config version="2.2"
    xmlns="http://xmlns.jcp.org/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-facesconfig_2_2.xsd">
    <application>
        <resource-bundle>
            <base-name>/resources</base-name>
            <var>resources</var>
        </resource-bundle>
    </application>
<validator>
    <validator-id>checkboxValidator</validator-id>
    <validator-class>gov.anl.aps.dm.portal.controllers.CheckboxValidator</validator-class>
</validator>
</faces-config>