/**
* Handles the focusLost event by invoking the focusLost methods on listener-a and listener-b.
*
* @param e the focus event
*/
public void focusLost(FocusEvent e) {
((FocusListener) a).focusLost(e);
((FocusListener) b).focusLost(e);
}
/**
* Handles the focusGained event by invoking the focusGained methods on listener-a and listener-b.
*
* @param e the focus event
*/
public void focusGained(FocusEvent e) {
((FocusListener) a).focusGained(e);
((FocusListener) b).focusGained(e);
}