Parse Bill n Pay Customer Info Json Response

 //{}&&{"biller":{"customerinfo":{"customer":[{"firstname":"S","middlename":"R","lastname":"S","internalid":"502CD927-651E-E67C-A3FD-AABEC48F026B","id":"502CD927-651E-E67C-A3FD-AABEC48F026B"}]}}}
       

        JSONParser parser = new JSONParser();
       
        //cut out first 4 characters {}&&
        jsonString = jsonString.substring(4);
               
        Object obj = parser.parse(jsonString);

        JSONObject jsonObject = (JSONObject) obj;

        JSONObject biller = (JSONObject) jsonObject.get("biller");

        JSONObject customerinfo = (JSONObject) biller.get("customerinfo");  
       
        JSONArray customerArray = (JSONArray) customerinfo.get("customer");
       
        JSONObject customer = (JSONObject) customerArray.get(0);
           
System.out.println("fullname: "+customer.get("firstname")+" "+customer.get("lastname"));  
        System.out.println("customeremail: "+customer.get("email").toString());