Formatador JSF para moeda

CurrencyConverter.java

import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.util.Locale;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.convert.Converter;
import javax.faces.convert.FacesConverter;

/**
 *
 * @author Chavão <fale@chavao.net>
 */
@FacesConverter("CurrencyConverter")
public class CurrencyConverter implements Converter {
    protected final String currencySymbol = "R$ ";

    @Override
    public Object getAsObject(FacesContext context, UIComponent component, String value) {
        return (Object) value.replaceAll("[^,0123456789]", "").replaceAll(",", ".");
    }

    @Override
    public String getAsString(FacesContext context, UIComponent component, Object value) {
        NumberFormat nf = (DecimalFormat) NumberFormat.getNumberInstance(new Locale("pt", "BR"));
        nf.setMinimumFractionDigits(2);
        return this.currencySymbol + nf.format(value);
    }
}