Calendar cal = Calendar.getInstance();
cal.add(Calendar.DATE, 1);
Date date = cal.getTime();
SimpleDateFormat datef = new SimpleDateFormat("yyyy-MM-dd_HH-mm-ss");
String filename = "./protocol_" + datef.format(date) + ".txt";

try {
    BufferedWriter bw = new BufferedWriter(new FileWriter(filename));
    bw.write(textareaStatus.getText());
    bw.close();

} catch (IOException ioe) {

    ioe.printStackTrace();
}