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The Java Developers Almanac 1.4 |
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e643. Handling Events with an Anonymous ClassIf 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) {
}
});
e645. Handling Key Presses e646. Handling Mouse Clicks e647. Handling Mouse Motion e648. Detecting Double and Triple Clicks e649. Handling Focus Changes e650. Firing Item Events © 2002 Addison-Wesley. |