File: /WEB-INF/validator/validation.xml

        <?xml version="1.0" encoding="iso-8859-1"?>
<!--
    Licensed to the Apache Software Foundation (ASF) under one or more
    contributor license agreements.  See the NOTICE file distributed with
    this work for additional information regarding copyright ownership.
    The ASF licenses this file to You under the Apache License, Version 2.0
    (the "License"); you may not use this file except in compliance with
    the License.  You may obtain a copy of the License at
   
         http://www.apache.org/licenses/LICENSE-2.0
   
    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
-->
<!DOCTYPE form-validation PUBLIC
          "-//Apache Software Foundation//DTD Commons Validator Rules Configuration 1.3.0//EN"
          "http://jakarta.apache.org/commons/dtds/validator_1_3_0.dtd">
<form-validation>
  <global>
    <constant>
      <constant-name>phone</constant-name>
      <constant-value>^\(?(\d{3})\)?[-| ]?(\d{3})[-| ]?(\d{4})$</constant-value>
    </constant>
    <constant>
      <constant-name>zip</constant-name>
      <constant-value>^\d{5}\d*$</constant-value>
    </constant>
  </global>

  <!-- ========================= Default Formset ========================= -->
  <formset>

    <constant>
      <constant-name>zip</constant-name>
      <constant-value>^\d{5}(-\d{4})?$</constant-value>
    </constant>

    <form name="registrationForm">
      <field property="firstName" depends="required,mask,minlength">
        <arg key="registrationForm.firstname.displayname" position="0"/>
        <arg name="minlength" key="${var:minlength}" resource="false" position="1"/>
        <var>
          <var-name>mask</var-name>
          <var-value>^\w+$</var-value>
        </var>
        <var>
          <var-name>minlength</var-name>
          <var-value>5</var-value>
        </var>
      </field>
      <field property="lastName" depends="required,mask,maxlength">
        <msg name="mask" key="registrationForm.lastname.maskmsg" />
        <arg key="registrationForm.lastname.displayname" position="0" />
        <arg name="maxlength" key="${var:maxlength}" resource="false" position="1"/>
         <var>
          <var-name>mask</var-name>
          <var-value>^[a-zA-Z]*$</var-value>
        </var>
        <var>
          <var-name>maxlength</var-name>
          <var-value>10</var-value>
        </var>
      </field>
      <field property="addr" depends="required">
        <arg key="registrationForm.addr.displayname" />
      </field>
      <field property="cityStateZip.city" depends="required,mask">
        <arg key="registrationForm.city.displayname" />
        <var>
          <var-name>mask</var-name>
          <var-value>^[a-zA-Z]*$</var-value>
        </var>
      </field>
      <field property="cityStateZip.stateProv" depends="required,mask">
        <arg key="registrationForm.stateprov.displayname" />
        <var>
          <var-name>mask</var-name>
          <var-value>^[a-zA-Z]*$</var-value>
        </var>
      </field>
      <field property="cityStateZip.zipPostal[1]" depends="required,mask">
        <arg key="registrationForm.zippostal.displayname" />
        <var>
          <var-name>mask</var-name>
          <var-value>${zip}</var-value>
        </var>
      </field>
      <field property="phone" depends="mask">
        <arg key="registrationForm.phone.displayname" />
        <var>
          <var-name>mask</var-name>
          <var-value>${phone}</var-value>
        </var>
      </field>
      <field property="email" depends="required,email">
        <arg key="registrationForm.email.displayname" />
      </field>
    </form>

    <form name="multiRegistrationForm">
      <field property="firstName" depends="required,mask" page="1">
        <arg key="registrationForm.firstname.displayname" />
        <var>
          <var-name>mask</var-name>
          <var-value>^\w+$</var-value>
        </var>
      </field>
      <field property="lastName" depends="required,mask" page="1">
        <msg name="mask" key="registrationForm.lastname.maskmsg" />
        <arg key="registrationForm.lastname.displayname" />
        <var>
          <var-name>mask</var-name>
          <var-value>^[a-zA-Z]*$</var-value>
        </var>
      </field>
      <field property="addr" depends="required" page="1">
        <arg key="registrationForm.addr.displayname" />
      </field>
      <field property="cityStateZip.city" depends="required,mask" page="1">
        <arg key="registrationForm.city.displayname" />
        <var>
          <var-name>mask</var-name>
          <var-value>^[a-zA-Z]*$</var-value>
        </var>
      </field>
      <field property="cityStateZip.stateProv" depends="required,mask" page="2">
        <arg key="registrationForm.stateprov.displayname" />
        <var>
          <var-name>mask</var-name>
          <var-value>^[a-zA-Z]*$</var-value>
        </var>
      </field>
      <field property="cityStateZip.zipPostal[1]" depends="required,mask" page="2">
        <arg key="registrationForm.zippostal.displayname" />
        <var>
          <var-name>mask</var-name>
          <var-value>${zip}</var-value>
        </var>
      </field>
      <field property="phone" depends="mask" page="2">
        <arg key="registrationForm.phone.displayname" />
        <var>
          <var-name>mask</var-name>
          <var-value>${phone}</var-value>
        </var>
      </field>
      <field property="email" depends="required,email" page="2">
        <arg key="registrationForm.email.displayname" />
      </field>
    </form>
  </formset>

  <!-- ========================= fr Formset ========================= -->
  <formset language="fr">

    <form name="registrationForm">

      <field property="lastName" depends="required,mask">
        <msg name="mask" key="registrationForm.lastname.maskmsg" />
        <arg key="registrationForm.lastname.displayname" />
        <var>
          <var-name>mask</var-name>
          <var-value>^\w+$</var-value>
        </var>
      </field>

      <field property="cityStateZip.stateProv">
        <arg  key="registrationForm.stateprov.displayname" />
      </field>

      <field property="phone">
        <arg key="registrationForm.phone.displayname" />
      </field>

    </form>

    <form name="multiRegistrationForm">

      <field property="lastName" depends="required,mask" page="1">
        <msg name="mask" key="registrationForm.lastname.maskmsg" />
        <arg key="registrationForm.lastname.displayname" />
        <var>
          <var-name>mask</var-name>
          <var-value>^\w+$</var-value>
        </var>
      </field>

      <field property="cityStateZip.stateProv" page="2">
        <arg key="registrationForm.stateprov.displayname" />
      </field>

      <field property="phone" page="2">
        <arg key="registrationForm.phone.displayname" />
      </field>

    </form>

  </formset>

  <!-- ========================= ja Formset ========================= -->
  <formset language="ja">

    <constant>
      <constant-name>zip</constant-name>
      <constant-value>^\d{3}-\d{4}$</constant-value>
    </constant>

    <constant>
      <constant-name>phone</constant-name>
      <constant-value>^[0][1-9]((\d{2,3}-?)|(-\d{2,3})|(\d-\d{1,2})|(\d{2}-\d))\d-\d{4}$</constant-value>
    </constant>

    <form name="registrationForm">

      <!-- ${zip} constant is different in this locale -->
      <field property="cityStateZip.zipPostal[1]" depends="required,mask">
        <arg key="registrationForm.zippostal.displayname" />
        <var>
          <var-name>mask</var-name>
          <var-value>${zip}</var-value>
        </var>
      </field>

      <!-- ${phone} constant is different in this locale -->
      <field property="phone" depends="mask">
        <arg key="registrationForm.phone.displayname" />
        <var>
          <var-name>mask</var-name>
          <var-value>${phone}</var-value>
        </var>
      </field>

    </form>


    <form name="multiRegistrationForm">

      <field property="cityStateZip.zipPostal[1]" depends="required,mask" page="2">
        <arg key="registrationForm.zippostal.displayname" />
        <var>
          <var-name>mask</var-name>
          <var-value>${zip}</var-value>
        </var>
      </field>

      <field property="phone" depends="mask" page="2">
        <arg key="registrationForm.phone.displayname" />
        <var>
          <var-name>mask</var-name>
          <var-value>${phone}</var-value>
        </var>
      </field>

    </form>

  </formset>

  <!-- ========================= fr-CA Formset ========================= -->

</form-validation>