Using checkboxes

<h:selectManyCheckbox id="mySelectBox" value="#{managedBean.selectedValues}">
<f:selectItems value="#{managedBean.valuesList}"/>
</h:selectManyCheckbox>

Using a select list of size 1

<h:selectManyMenu id="mySelectBox" value="#{managedBean.selectedValues}">
<f:selectItems value="#{managedBean.valuesList}"/>
</h:selectManyMenu>

Using a select list with some height

<h:selectManyListbox id="mySelectBox" value="#{managedBean.selectedValues}">
<f:selectItems value="#{managedBean.valuesList}">
</h:selectManyListbox>

JSFTags