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Author

Events

Aru
Ranch Hand

Joined: Jul 20, 2000
Posts: 112
Hi All,
Can anyone help me with this ?
If a component uses enableEvent() to handle a certain event mask, it may or may not use an Adapter as a listener for this event. True Or False

public class TestFrame extends Frame {
public TestFrame(String title) {
super(title);
enableEvents(AWTEvent.WINDOW_EVENT_MASK);
}

public void processWindowEvent(WindowEvent we) {
System.out.println("Window event processed");
}
}
1. The window listener that has been addded to the TestFrame will be called on every window Object.
2. This code will compile & run if a window listener is added to an instance of TestFrame.
3. An exception is thrown if a window listener is added to TestFrame.
4. The window Listener that has been added to the TestFrame will never been called
5. This code will not compile if a window listenr is added to the TestFrame.
Can anyone explain ......why use enableEvents() instead of implementing the appropriate liseners...... ?
Thx in Advance
Aruna
 
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subject: Events