Iterate through JSONObject from root in json simple

Question

I am trying to iterate over a json object using json simple. I have seen answers where you can do a getJSONObject("child") from

{ "child": { "something": "value", "something2": "value" } } 

But what if I just have something

{ "k1":"v1", "k2":"v2", "k3":"v3" }  

And want to iterate over that json object. This:

Iterator iter = jObj.keys(); 

Throws:

cannot find symbol symbol  : method keys() location: class org.json.simple.JSONObject 

Answer 1

Assuming your JSON object is saved in a file "simple.json", you can iterate over the attribute-value pairs as follows:

JSONParser parser = new JSONParser();  Object obj = parser.parse(new FileReader("simple.json"));  JSONObject jsonObject = (JSONObject) obj;  for(Iterator iterator = jsonObject.keySet().iterator(); iterator.hasNext();) {     String key = (String) iterator.next();     System.out.println(jsonObject.get(key)); } 

Answer 2

You can do like this

String jsonstring = "{ \"child\": { \"something\": \"value\", \"something2\": \"value\" } }"; JSONObject resobj = new JSONObject(jsonstring); Iterator<?> keys = resobj.keys().iterator(); while(keys.hasNext() ) {     String key = (String)keys.next();     if ( resobj.get(key) instanceof JSONObject ) {         JSONObject xx = new JSONObject(resobj.get(key).toString());         Log.d("res1",xx.getString("something"));         Log.d("res2",xx.getString("something2"));     } }