[java] Can't get key events

public class Controller
    extends MouseAdapter
    implements KeyListener
{
    public void mousePressed( MouseEvent e ) 
    {
	System.out.println( "mouse down" );
    }
	    
    public void keyTyped( KeyEvent e )
    {
	System.out.println( "key typed" );
    }

    public void keyPressed( KeyEvent e )
    {
       System.out.println( "key down" );
    }

    public void keyReleased( KeyEvent e ) 
    {
       System.out.println( "key up" );
    }
}

// View extends JPanel
m_view = new View();

Controller c = new Controller();
m_view.addMouseListener( c );
m_view.addKeyListener( c );