public void blind() {
    result = textIn.getText();
    String[] textBlind = result.split("n");
    String[] textSpace = {""};

    for (int i = 0; i < textBlind.length; i++) {
        result = result.replaceAll(textBlind[i], textSpace[0]);
        textIn.setText(result);
        try {
            Thread.sleep(1000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
}