manager.focusPreviousComponent (this);
if (focusRoot != null) {  FocusTraversalPolicy policy = focusRoot.getFocusTraversalPolicy(); Component nextFocus = policy.getComponentBefore(focusRoot, focusComp);   if (nextFocus == null) nextFocus = policy.getDefaultComponent(focusRoot);   if (nextFocus != null) nextFocus.requestFocus(); }
  public void transferFocusBackward ()  {    KeyboardFocusManager manager = KeyboardFocusManager.getCurrentKeyboardFocusManager ();    manager.focusPreviousComponent (this);	}