Code Samples from the Java Developers Almanac 2000

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Handling Events with an Anonymous Class

If an event handler is specific to a component (that is, not shared by other components), there is no need to declare a class to handle the event. The event handler can be implemented using an anonymous inner class. This example demonstrates an anonymous inner class to handle key events for a component.

 
 component.addKeyListener(new KeyAdapter() {
   public void keyPressed(KeyEvent evt) {
   }
 });

 

Examplets provided by permission of the publisher, Addision-Wesley, and Author Patrick Chan.
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