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| Frage | Antworten |
| How can a Listener register for events with a source? | Call the source's registration method. Registration methods always take the form of: add<EventType>Listener To register for a button's ActionEvents, for example, call: button.addActionListener(this) |
| How do you implement a listener interface? | By implementing all of the interface's even-handling methods. Put your event-handling code in the listener call-back method. For ActionEvents, the method is: public void actionPerformed(ActionEvent event) { .. } |
| What is the Event object? | Event object is the argument to the event call-back method. Event object holds data about the Event |
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