1. opensymphony
  2. webwork

Source

webwork / webapps / showcase / src / java / com / opensymphony / webwork / showcase / action / SkillAction-validation.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE validators PUBLIC "-//OpenSymphony Group//XWork Validator 1.0//EN" "http://www.opensymphony.com/xwork/xwork-validator-1.0.dtd">
<validators>
    <!-- Field-Validator Syntax -->
    <!--field name="currentSkill.name">
        <field-validator type="requiredstring">
            <param name="trim">true</param>
            <message key="skill.name.required"/>
        </field-validator>
    </field-->
</validators>