Reading exception from JSON

Question

I have this code

JSONObject obj; try { obj = new JSONObject(readUrl("http://dleel.ps/ss.txt")); List<String> list = new ArrayList<String>(); JSONArray array = obj.getJSONArray("data"); for(int i = 0 ; i < array.length() ; i++) { if (array.getJSONObject(i).getString("link")!=null) System.out.println(array.getJSONObject(i).getString("link")); } } 

Why do I get an exception when there is no link (JSONObject ["link"] not found.), What should I put in the if condition? I also tried using optJSONArray instead of getJSONArray, but the same

Answer 1

The getString () method throws an exception if the key is not found. Use the has () method instead:

 if (array.getJSONObject(i).has("link")) 

Answer 2

To check if a key exists,

 array.getJSONObject(i).has("link")