Неправильная работа программы после создания Artifacts

public void getTextFromFile() throws IOException {
        InputStream in = new FileInputStream(new File("C:/final/newfile_final.txt"));
        BufferedReader reader = new BufferedReader(new InputStreamReader(in));
        ArrayList listWithString = new ArrayList();
        String line;
        while ((line = reader.readLine()) != null) {
            listWithString.add(line);
        }
        textArea.setText(String.valueOf(listWithString.get(2)));
        System.out.println(listWithString.get(2));   
        reader.close();
    }

File fileDir = new File("C:/final/complite_final.txt");
        OutputStreamWriter out = new OutputStreamWriter(new FileOutputStream(fileDir));
        out.write("Holla" + "\n");
        out.append("HollaAppend");
        out.flush();
        out.close();

File file = new File("C:/final/complite_final.txt");
        BufferedWriter bw;
        FileWriter fw;
        if(!file.exists()){
            file.createNewFile();
            fw = new FileWriter(file.getAbsoluteFile(), true);
            bw = new BufferedWriter(fw);
            bw.append("Testiiiing" + "\n");
            bw.close();
        } else {
            fw = new FileWriter(file.getAbsoluteFile(), true);
            bw = new BufferedWriter(fw);
            bw.append("append text" + "\n");
            bw.close();
        }