I have the following lines to get a tooltip text for a JList item :

```
JList aList=new JList(aData)
{
  public String getToolTipText(MouseEvent evt)  // This method is called as the cursor moves within the list.
  {
    String tooltipText="Some tooltip";
    int tooltipWidth= ?
    return tooltipText;
  }
}

```

Inside getToolTipText(), how do I get the tooltipText width?