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| Chapter 20 The java.awt.event Package |

## 20.19 java.awt.event.KeyListener (JDK 1.1)

###

This interface defines the methods that an object must implement to "listen" for key events on AWT components. When a `KeyEvent` occurs, an AWT component notifies its registered `KeyListener` objects by invoking one of their methods.

An easy way to implement this interface is by subclassing the `KeyAdapter` class.

    public abstract interface KeyListener extends EventListener {
        // Public Instance Methods
                public abstract void keyPressed(KeyEvent e);
                public abstract void keyReleased(KeyEvent e);
                public abstract void keyTyped(KeyEvent e);
    }

### Implemented By:

`AWTEventMulticaster, KeyAdapter`

### Passed To:

`AWTEventMulticaster.add(), AWTEventMulticaster.remove(), Component.addKeyListener(), Component.removeKeyListener()`

### Returned By:

`AWTEventMulticaster.add(), AWTEventMulticaster.remove()`

java.awt.event.KeyEvent (JDK 1.1) |  | java.awt.event.MouseAdapter (JDK 1.1)