primefaces p:tableData 显示 List<List>

@javax.faces.bean.ViewScoped
public class Controlador {

   private List<List> estadistico;

   @PostConstruct
   public void inicializar(){
      this.estadistico = new ArrayList<List>();

      this.estadistico.add(  Arrays.asList( new Integer[]{0,1,24})); 
      this.estadistico.add(  Arrays.asList( new Integer[]{5,1,34})); 
      this.estadistico.add(  Arrays.asList( new Integer[]{12,1,4})); 

   }
   //getter's and setter's
}

<p:dataTable value="#{controlador.estadistico}" var="lista">
    <p:columns value="#{controlador.estadistico[0]}" columnIndexVar="i"  var="testcolvar" >
        #{lista[i]}
    </p:columns>
</p:dataTable>

note:var="testcolvar" 必须写。否则 columnIndexVar="i" i娶不到值。无法显示列表内容！！！！