title: Convert JSON response into 2D String Array
body: <p>Hello i´m new in Android and searching the whole morning for a solution.
  I have only found posts which could not help me. The interessting post  <a href="https://stackoverflow.com/questions/31536159/from-json-to-2d-array">from JSON to 2D array</a> dont worked in my project. I tried on different ways to implement this method into my code.
  I just want to convert my JSON response into a 2D String Array like this format:</p>
  
  <p>Array[0][0] = Artikelnummer;</p>
  
  <p>Array[0][1] = Preis;</p>
  
  <p>Array[0][2] = Von;</p>
  
  <p>Array[0][3] = Bis;</p>
  
  <p>Array[0][4] = art_link;</p>
  
  <p>Array[1][0] = Artikelnummer;</p>
  
  <p>Array[1][1] = Preis;</p>
  
  <p>Array[1][2] = Von;</p>
  
  <p>Array[1][3] = Bis;</p>
  
  <p>Array[0][4] = art_link;</p>
  
  <p>.....</p>
  
  <p>...</p>
  
  <p>..</p>
  
  <p><strong>The JSON response looks like:</strong></p>
  
  <pre><code>[{
  "Artikelnummer": 01578675,
  "Preis": 3.27,
  "Von": "2017-10-16 08:00:00",
  "Bis": "2017-10-20 13:00:00",
  "art_link": "http://link/.jpg"
  },
  {
  "Artikelnummer": 99999999,
  "Preis": 9.99,
  "Von": "2017-10-16 08:00:00",
  "Bis": "2017-10-20 13:00:00",
  "art_link": "http://link/.jpg"
  },
  {
  "Artikelnummer": 55555555,
  "Preis": 5.55,
  "Von": "2017-10-16 08:00:00",
  "Bis": "2017-10-20 13:00:00",
  "art_link": "http://link/.jpg"
   },
  {
  "Artikelnummer": 88888888,
  "Preis": 8.88,
  "Von": "2017-10-16 08:00:00",
  "Bis": "2017-10-20 13:00:00",
  "art_link": "http://link/.jpg"
  }]
  </code></pre>
  
  <p><strong>I get my response on this way:</strong></p>
  
  <pre><code>         URL url = new URL("https://myjson.com");
           HttpURLConnection httpURLConnection = (HttpURLConnection) 
           url.openConnection();
  
           InputStream inputStream = httpURLConnection.getInputStream();
  
           BufferedReader bufferedReader = new BufferedReader(new 
           InputStreamReader(inputStream));
           String line = "";
  
           while(line != null){
                line = bufferedReader.readLine();
                data = data + line;
  
           ArrayList&lt;String&gt; listdata = new ArrayList&lt;&gt;();
           JSONArray jArray = new JSONArray(data);
  
           for(int i =0 ;i &lt;jArray.length(); i++){
               listdata.add(jArray.getString(i));
               JSONObject jObject = (JSONObject) jArray.get(i);
          }
  </code></pre>
  
  <p><strong>But how I can convert my jArray response into a String[][]</strong></p>
  
  <p>Something like this, but this didn´t work for my project</p>
  
  <pre><code>String[][] matrix = new String[jArray.length][5];
  </code></pre>