in message-resource/src/main/java/org/apache/struts/register/action/Register.java [28:50]
public void validate(){
if ( personBean.getFirstName().length() == 0 ){
addFieldError( "personBean.firstName", "First name is required." );
}
if ( personBean.getEmail().length() == 0 ){
addFieldError( "personBean.email", "Email is required." );
}
if ( personBean.getAge() < 18 ){
addFieldError( "personBean.age", "Age is required and must be 18 or older" );
}
}