Appending and item to a Select List

I am trying to append an Item to the end of a Select List.

Code:

---

<s:selectItems id="billing01_payments" var="_var"
        label="#{_var.formattedAddress}"
        value="#{customerSession.payments}" />
        <f:selectItem id="newCard" itemLabel="New Card" itemValue="noSelectionValue"/>

---

But I don't know what to put in as either a value or itemValue.

What do I put there? The reason we are not wanting to use noSelectionLabel is because we want to order by The default credit card first.

This looks like JavaScript, not Java. What does this have to do with programming in Java?