The example contains two event sources (JButton instances) and two event listeners. One of the event listeners (an instance of a class called MultiListener) listens for events from both buttons. When it receives an event, it adds the event's "act

For example, you might perform animation or update a component that displays progress toward a goal. Swing timers are very easy to use. When you create the timer, you specify an action listener to be notified when the timer "goes off". The actio

Changing the state of an object is known as an event. For example, click on button, dragging mouse etc. The java.awt.event package provides many event classes and Listener interfaces for event handling.