Parsing JSON Object in Java [duplicate]

Question

I have JSON object as follows:

member = "{interests : [{interestKey:Dogs}, {interestKey:Cats}]}"; 

In Java I want to parse the above json object and store the values in an arraylist.

I am seeking some code through which I can achieve this.

Answer 1

I'm assuming you want to store the interestKeys in a list.

Using the org.json library:

JSONObject obj = new JSONObject("{interests : [{interestKey:Dogs}, {interestKey:Cats}]}");  List<String> list = new ArrayList<String>(); JSONArray array = obj.getJSONArray("interests"); for(int i = 0 ; i < array.length() ; i++){     list.add(array.getJSONObject(i).getString("interestKey")); } 

Answer 2

public class JsonParsing {  public static Properties properties = null;  public static JSONObject jsonObject = null;  static {     properties = new Properties(); }  public static void main(String[] args) {      try {          JSONParser jsonParser = new JSONParser();          File file = new File("src/main/java/read.json");          Object object = jsonParser.parse(new FileReader(file));          jsonObject = (JSONObject) object;          parseJson(jsonObject);      } catch (Exception ex) {         ex.printStackTrace();     } }  public static void getArray(Object object2) throws ParseException {      JSONArray jsonArr = (JSONArray) object2;      for (int k = 0; k < jsonArr.size(); k++) {          if (jsonArr.get(k) instanceof JSONObject) {             parseJson((JSONObject) jsonArr.get(k));         } else {             System.out.println(jsonArr.get(k));         }      } }  public static void parseJson(JSONObject jsonObject) throws ParseException {      Set<Object> set = jsonObject.keySet();     Iterator<Object> iterator = set.iterator();     while (iterator.hasNext()) {         Object obj = iterator.next();         if (jsonObject.get(obj) instanceof JSONArray) {             System.out.println(obj.toString());             getArray(jsonObject.get(obj));         } else {             if (jsonObject.get(obj) instanceof JSONObject) {                 parseJson((JSONObject) jsonObject.get(obj));             } else {                 System.out.println(obj.toString() + "\t"                         + jsonObject.get(obj));             }         }     } }}