{  if (index > 0) {  return list.get(index - 1); }
{  if (index > 0)  return list.get(index - 1);
    public Object getPreviousValue()    {	/* Check for a previous value. */	if (index > 0) 	    {		/* Return the element at the previous position */		return list.get(index - 1);	    }	else	    {		/* Return null as this is the start of the list */		return null;	    }    }