KeyAdapter und -Listener.java

class GearsKeyAdapter extends KeyAdapter {      
    public void keyPressed(KeyEvent e) {
        int kc = e.getKeyCode();
        if(KeyEvent.VK_LEFT == kc) {
            view_roty -= 1;
        } else if(KeyEvent.VK_RIGHT == kc) {
            view_roty += 1;
        } else if(KeyEvent.VK_UP == kc) {
            view_rotx -= 1;
        } else if(KeyEvent.VK_DOWN == kc) {
            view_rotx += 1;
        }
    }
  }


KeyListener gearsKeys = new GearsKeyAdapter();

getContentPane().addKeyListener(gearsKeys);