Password Validator

package ch.hasselba.xpages.registration;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.faces.application.FacesMessage;
import javax.faces.component.UIComponent;
import javax.faces.component.UIInput;
import javax.faces.context.FacesContext;
import javax.faces.validator.Validator;
import javax.faces.validator.ValidatorException;

import ch.hasselba.xpages.JSFUtils;

public class PasswordValidator implements Validator {

    private final static String VAR_NAME_PASSWORDRETYPE = "httpPasswordRetype";
    private final static String ERR_MSG_PASSWORDS_NOMATCH = "Passwords are not equal.";
    private final static String ERR_MSG_PASSWORDS_INSECURE = "Password must have a length of six characters and contain at least a digit, a lower and an upper character.";
    private final static Pattern passwordPattern =  Pattern.compile("(?=.{6,})"   +     // "" followed by 6+ symbols
            "(?=.*[a-z])" +     // --- ' ' --- at least 1 lower
            "(?=.*[A-Z])" +     // --- ' ' --- at least 1 upper
            "(?=.*[0-9])" +     // --- ' ' --- at least 1 digit
            ".*");              // the actual characters
    public void validate(FacesContext context, UIComponent component,
            Object value) throws ValidatorException {


        String password = (String) value;
        UIInput confirmComponent = (UIInput) JSFUtils.resolveVariable(VAR_NAME_PASSWORDRETYPE);

        String confirm = (String) confirmComponent.getSubmittedValue();

        Matcher matcher = passwordPattern.matcher( password );
        if( matcher.matches() == false ){
            throw new ValidatorException(new FacesMessage(
                    ERR_MSG_PASSWORDS_INSECURE ));
        }

        // Compare the password with the confirm password.
        if (!password.equals(confirm)) {
            confirmComponent.setValid(false);
            throw new ValidatorException(new FacesMessage(
                    ERR_MSG_PASSWORDS_NOMATCH));
        }




    }

}