Use Semantic Events

Whenever possible, you should listen for semantic events rather than low-level events. That way, you can make your code as robust and portable as possible.

For example, listening for action events on buttons, rather than mouse events, means that the button will react appropriately when the user tries to activate the button using a keyboard alternative or a look-and-feel-specific gesture.

When dealing with a compound component such as a combo box, it's imperative that you stick to semantic events, since you have no reliable way of registering listeners on all the look-and-feel-specific components that might be used to form the compound component.