FocusListener no header da tabela

public class Teste extends MouseAdapter implements FocusListener{

    @Override
    public void mouseClicked(MouseEvent evt) {
    
            JTable table = ((JTableHeader) evt.getSource()).getTable();
     
             table.getTableHeader().addFocusListener(this);
     }

@Override
    public void focusGained(FocusEvent e) {
        System.out.println("foi");
    }

    @Override
    public void focusLost(FocusEvent e) {
        System.out.println("unfoi");
    }

}