I want to add a JSONObject to a JSONArray and that JSONArray included in other JSONObject

Question

I need below kind of structure constructed in java and send it as response :

var abc = {
  "action": "         


        

Answer 1

org.json.simple.JSONArray resultantJson = new org.json.simple.JSONArray();

        org.json.JSONArray o1 = new org.json.JSONArray("[{\"one\":[],\"two\":\"abc\"}]");
        org.json.JSONArray o2 = new org.json.JSONArray("[{\"three\":[1,2],\"four\":\"def\"}]");


        resultantJson.addAll(o1.toList());
        resultantJson.addAll(o2.toList());