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Showing content from https://docs.oracle.com/en/java/javase/19/docs/api/java.desktop/java/awt/event/KeyListener.html below:

KeyListener (Java SE 19 & JDK 19)

All Superinterfaces:

EventListener

All Known Implementing Classes:

AWTEventMulticaster, BasicComboBoxUI.KeyHandler, BasicComboPopup.InvocationKeyHandler, BasicTableUI.KeyHandler, BasicTreeUI.KeyHandler, KeyAdapter

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 abstract

class (overriding only the methods of interest).

The listener object created from that class is then registered with a component using the component's addKeyListener method. A keyboard event is generated when a key is pressed, released, or typed. The relevant method in the listener object is then invoked, and the KeyEvent is passed to it.

Since:

1.1

See Also:

• KeyAdapter
• KeyEvent
• Tutorial: Writing a Key Listener

• Method Summary

  void

  Invoked when a key has been pressed.

  void

  Invoked when a key has been released.

  void

  Invoked when a key has been typed.

• Method Details
  • keyTyped

    Invoked when a key has been typed. See the class description for

    KeyEvent

    for a definition of a key typed event.

    Parameters:

    e - the event to be processed

  • keyPressed

    Invoked when a key has been pressed. See the class description for

    KeyEvent

    for a definition of a key pressed event.

    Parameters:

    e - the event to be processed

  • keyReleased

    Invoked when a key has been released. See the class description for

    KeyEvent

    for a definition of a key released event.

    Parameters:

    e - the event to be processed

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