BufferedWriter doesnt write JSON String correctly

Question

I wrote a code that gets a JSON text from a website and formats it so it is easier to read. My problem with the code is:

public static void gsonFile(){
  try {
    re = new BufferedReader(new FileReader(dateiname));
    Gson gson = new GsonBuilder().setPrettyPrinting().create();
    JsonParser jp = new JsonParser();
    String uglyJSONString ="";
    uglyJSONString = re.readLine();
    JsonElement je = jp.parse(uglyJSONString);  
    String prettyJsonString = gson.toJson(je);
    System.out.println(prettyJsonString);

    wr = new BufferedWriter(new FileWriter(dateiname));
    wr.write(prettyJsonString);

    wr.close();
    re.close();

} catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}
}

It correctly prints it into the console : http://imgur.com/B8MTlYW.png

But in my txt file it looks like this: http://imgur.com/N8iN7dv.png

What can I do so it correctly prints it into the file? (separated by new lines)

Answer 1

Gson uses \n as line delimiter (as can be seen in the newline method here).

Since Notepad does not understand \n you can either open your result file with another file editor (Wordpad, Notepad++, Atom, Sublime Text, etc.) or replace the \n by \r\n before writing it:

prettyJsonString = prettyJsonString.replace("\n", "\r\n");