Assigning json array values to string array in java [duplicate]

Question

This question already has answers here:

Convert JSONArray to String Array (18 answers)

Closed 4 years ago.

I am parsing the json array and fetching the result. I want to store the json array values to string array.

Here is my code:

public static void main(String[] args) 
 throws JSONException, IOException, URISyntaxException 
{
 String[] Stage_Probability;
 JSONArray stagearray = x.getJSONObject(j).getJSONArray("val");
 Map<String, String> test2 = new HashMap<String, String>();
 for (j = 0; j < stagearray.length(); j++) 
 {
 test2.put(stagearray.getJSONObject(j).getString("pbty"), stagearray.getJSONObject(j).getString("sortorder"));
 System.out.println("----" + stagearray.getJSONObject(j).getString("pbty"));
 Stage_Probability[j] = stagearray.getJSONObject(j).getString("pbty").toString();
 }
}

It prints null. Any help will be appreciated.

• mad_manny: Please show the json input.
• Arun Kumar: this line gives expected output.I want to save the output in one string array System.out.println("----" + stagearray.getJSONObject(j).getString("pbty"))

Answer 1

Simple implementation:

 /* The JSONArray object comes in the form
 [{"accountNumber":"5626-72838-7377"},{"accountNumber":"5626-5555-7377"}]
 The algorithm below converts it to numerically indexed String[] array i.e
 {5626-2838-7377,5626-5555-7377}*/
 private static String[] jsonArrayToStringArray(JSONArray jsonArray) {
 int arraySize = jsonArray.size();
 String[] stringArray = new String[arraySize];
 for (int i = 0; i < arraySize; i++) {
 JSONObject jsonobj = (JSONObject) jsonArray.get(i);
 stringArray[i] = jsonobj.get("someObjectKey").toString();
 }
 return stringArray;
}

Answer 2

You just can use the code like this:

JSONArray array = new JSONArray(yourResponse);
List<String> list = new ArrayList<String>();
for (int i = 0; i < array.length(); i++){
 list.add(array.getJSONObject(i).getString("name"));
}