Write in File Android

writeToFile.java

    private void writeToFile(String data) {
        try {

            File root = new File(Environment.getExternalStorageDirectory(), "Debug");

            if (!root.exists()) {
                root.mkdirs();
            }

            File file = new File(root, "debug.txt");
            FileWriter writer = new FileWriter(file);
            writer.append(data);
            writer.flush();
            writer.close();

            Log.e("FILE" , "FILE CREATED");

        }
        catch (IOException e) {
            Log.e("Exception", "File write failed: " + e.toString());
        }
    }