How to avoid / suppress JSF <h:selectOneMenu /> null (no selection option) tab?

When creating a new item the user does not want to see the null no selection option in the Select-One Menu, but directly an item from the available items. So either to get rid of the null no option or display directly the second element in the dropdown. I tried the attribute hideNoSelection, but it does nothing. How can I achieve this?

<h:selectOneMenu id="ugroup" value="#{usersController.selected.ugroup}" title="#{bundle.CreateUsersTitle_ugroup}" required="true" requiredMessage="#{bundle.CreateUsersRequiredMessage_ugroup}">

</h:selectOneMenu>

----------------EDIT (after @Balus Answer) --------------------- Here is the Utility method that grabs JPA Lists to be displayed as a <h:selectOneMenu /> :

public class JsfUtil {

    public static SelectItem[] getSelectItems(List<?> entities, boolean selectOne) {
        int size = selectOne ? entities.size() + 1 : entities.size();
        SelectItem[] items = new SelectItem[size];
        int i = 0;
        if (selectOne) { // part to be removed
            items[0] = new SelectItem("", "---");
            i++;
        } // end of part to be removed
        for (Object x : entities) {
            items[i++] = new SelectItem(x, x.toString());
    开发者_开发问答    }
        return items;
    }

So appearently, all I have to do is remove this part? :

 if (selectOne) {
                items[0] = new SelectItem("", "---");
                i++;
            }  

But as this static method is used everywhere in my code, would it have any unwanted consequences?

• Like, when the user wants explicitly a null value from the <h:selectOneMenu />, if he decides to choose no option. My guess was to use <f:selectItem :

Just ensure that #{ugroupController.itemsAvailableSelectOne} does not contain an item with value null in the array or list. The first item will be the default selected option.

Alternatively, preset the property behind #{usersController.selected.ugroup} with the value of the desired item during bean's (post)construction.