throw new Error("not implemented");
Component focusComp = (comp == null) ? getGlobalFocusOwner () : comp; Container focusCycleRoot = focusComp.getFocusCycleRootAncestor (); FocusTraversalPolicy policy = focusCycleRoot.getFocusTraversalPolicy ();  Component next = policy.getComponentAfter (focusCycleRoot, focusComp); next.requestFocusInWindow ();
  public void focusNextComponent(Component comp)  {    throw new Error("not implemented");  }