What do I need to change the SketchView class so that KeyListener
will respond to pressed key's. below is a Model/View Architecture of a GUI that I am using, but I cant get any key events. I dont want to use at text component.

// *************************************** START *
public class Sketcher {
  public static void main(String[] args) {
    theApp = new Sketcher();
    SwingUtilities.invokeLater(
       new Runnable() { // Anonymous Runnable class object
                        public void run() { // Run method executed in thread
                          theApp.creatGUI(); // Call static GUI creator
                        }
                      } );
  }

  // Method to create the application GUI
  private void creatGUI() {
    window = new SketchFrame("Sketcher", this); // Create the app window
    Toolkit theKit = window.getToolkit(); // Get the window toolkit
    Dimension wndSize = theKit.getScreenSize(); // Get screen size

    // Set the position to screen center & size to half screen size
    window.setBounds(wndSize.width/4, wndSize.height/4, // Position
                      wndSize.width/2, wndSize.height/2); // Size

    window.addWindowListener(new WindowHandler());// Add window listener
    sketch = new SketchModel(); // Create the model
    view = new SketchView(this); // Create the view
    sketch.addObserver(view); // Register view with the model
    window.getContentPane().add(view, BorderLayout.CENTER);
    window.setVisible(true);
  }

  // Return a reference to the application window
  public SketchFrame getWindow() {
     return window;
  }

  // Return a reference to the model
  public SketchModel getModel() {
     return sketch;
  }

  // Return a reference to the view
  public SketchView getView() {
     return view;
  }

  // Handler class for window events
  class WindowHandler extends WindowAdapter {
    // Handler for window closing event
    public void windowClosing(WindowEvent e) {
    }
  }

  private SketchModel sketch; // The data model for the sketch
  private SketchView view; // The view of the sketch

  private SketchFrame window; // The application window
  private static Sketcher theApp; // The application object
}

// *************************************** END *

// *************************************** START *

class SketchView extends JComponent implements Observer {
  public SketchView(Sketcher theApp) {
    this.theApp = theApp;
  }

  // Method called by Observable object when it changes
  public void update(Observable o, Object rectangle) {
    // Code to respond to changes in the model...
  }

  private Sketcher theApp; // The application object
}

// *************************************** END *

// *************************************** START *

public class SketchModel extends Observable implements Iterable<Element>{
    protected LinkedList<Element> elements = new LinkedList<Element>();

    public boolean remove(Element element){
        boolean removed = elements.remove(element);
        if(removed){
            setChanged();
            notifyObservers(element.getBounds());
        }
        return removed;
    }

    public void add(Element element){
        elements.add(element);
        setChanged();
        notifyObservers(element.getBounds());
    }

    public Iterator<Element> iterator(){
        return elements.iterator();
    }

}

// *************************************** END *