Interface KeyListener
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- All Superinterfaces:
- EventListener
- All Known Implementing Classes:
- AWTEventMulticaster, BasicComboBoxUI.KeyHandler, BasicComboPopup.InvocationKeyHandler, BasicTableUI.KeyHandler, BasicTreeUI.KeyHandler, KeyAdapter
public interface KeyListener extends EventListener
The listener interface for receiving keyboard events (keystrokes). The class that is interested in processing a keyboard event either implements this interface (and all the methods it contains) or extends the abstractKeyAdapterclass (overriding only the methods of interest).The listener object created from that class is then registered with a component using the component's
addKeyListenermethod. A keyboard event is generated when a key is pressed, released, or typed. The relevant method in the listener object is then invoked, and theKeyEventis passed to it.- Since:
- 1.1
- See Also:
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KeyAdapter,KeyEvent, Tutorial: Writing a Key Listener
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method and Description voidkeyPressed(KeyEvent e)Invoked when a key has been pressed.voidkeyReleased(KeyEvent e)Invoked when a key has been released.voidkeyTyped(KeyEvent e)Invoked when a key has been typed.
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Method Detail
keyTyped
void keyTyped(KeyEvent e)
Invoked when a key has been typed. See the class description forKeyEventfor a definition of a key typed event.
keyPressed
void keyPressed(KeyEvent e)
Invoked when a key has been pressed. See the class description forKeyEventfor a definition of a key pressed event.
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