UI components in JSF can be associated with JavaBeans through value reference expressions. These expressions are a subset of the JSTL 1.0 / JSP 2.0 expression language (EL). Unfortunately, the EL doesn't currently support indexed properties. A workaround is to return a collection of objects:

public class RandomBean
{
   public Item[] getItems() { ... }
   public void setItem(int n, Item item) { ... }
}