public void repaint() { // Iterator itr = alphabets.entrySet().iterator(); Board board = (Board) getWorld(); List<Text> remainingActors = board.getObjects(Text.class); board.removeObjects(remainingActors); // itr = null; // itr = alphabets.entrySet().iterator(); actors.clear(); for (IAlphabet iAlphabet : alphabets) { paintAlphabet(iAlphabet); } }