public void eliminaTask(String nomeTask) {

    ETask t = null;
    Iterator<ETask> iterator = this.elenco_task.iterator();
    while (iterator.hasNext()) {
      ETask ti = iterator.next();
      if (ti.getNomeTask().equals(nomeTask)) t = ti;
    }

    this.elenco_task.remove(t);
    FTask ft = new FTask();
    ft.delete(t);
  }