Progress Bar

String[] disp = new String[]{
                        "\u25A1\u25A1\u25A1\u25A1\u25A1\u25A1\u25A1\u25A1",
                        "\u25A0\u25A1\u25A1\u25A1\u25A1\u25A1\u25A1\u25A1",
                        "\u25A0\u25A0\u25A1\u25A1\u25A1\u25A1\u25A1\u25A1",
                        "\u25A0\u25A0\u25A0\u25A1\u25A1\u25A1\u25A1\u25A1",
                        "\u25A0\u25A0\u25A0\u25A0\u25A1\u25A1\u25A1\u25A1",
                        "\u25A1\u25A0\u25A0\u25A0\u25A0\u25A1\u25A1\u25A1",
                        "\u25A1\u25A1\u25A0\u25A0\u25A0\u25A0\u25A1\u25A1",
                        "\u25A1\u25A1\u25A1\u25A0\u25A0\u25A0\u25A0\u25A1",
                        "\u25A1\u25A1\u25A1\u25A1\u25A0\u25A0\u25A0\u25A0",
                        "\u25A1\u25A1\u25A1\u25A1\u25A1\u25A0\u25A0\u25A0",
                        "\u25A1\u25A1\u25A1\u25A1\u25A1\u25A1\u25A0\u25A0",
                        "\u25A1\u25A1\u25A1\u25A1\u25A1\u25A1\u25A1\u25A0"
                };
                int indice = 0;
                while(sending) {
                    try {
                        String data = "\r" + disp[indice] + " " +
                                "Attempting to send packet to " +
                                address.toString() + ":" + port + "...";
                        System.out.write(data.getBytes());
                        if (indice < 12) indice++;
                        if (indice >= 12) indice = 0;
                        Thread.sleep(250);
                    } catch (IOException | InterruptedException e) {
                        e.printStackTrace();
                    }
                }