Iterate through JSONObject from root in json simple

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));
}