static TableWithTooltips tableWithTooltips() {
  ret (TableWithTooltips) swing(func { new TableWithTooltips });
}

sclass TableWithTooltips extends JTable {
  public String getToolTipText(MouseEvent e) {
    String tip = null;
    Point p = e.getPoint();
    int rowIndex = rowAtPoint(p);
    int colIndex = columnAtPoint(p);

    try {
      ret str(getValueAt(rowIndex, colIndex));
    } catch {
      null;
    }
  }
}