1public class test
2{
3    public static void main(String str[])
4    {
5        String jsonString = "{\"stat\": { \"sdr\": \"aa:bb:cc:dd:ee:ff\", \"rcv\": \"aa:bb:cc:dd:ee:ff\", \"time\": \"UTC in millis\", \"type\": 1, \"subt\": 1, \"argv\": [{\"type\": 1, \"val\":\"stackoverflow\"}]}}";
6        JSONObject jsonObject = new JSONObject(jsonString);
7        JSONObject newJSON = jsonObject.getJSONObject("stat");
8        System.out.println(newJSON.toString());
9        jsonObject = new JSONObject(newJSON.toString());
10        System.out.println(jsonObject.getString("rcv"));
11       System.out.println(jsonObject.getJSONArray("argv"));
12    }
13}