Putting HashMap in jsonobject

Question

i building a json object that consists of nameValue pairs defined in a Hashmap

the issue i am having is when i invoke:

jsonObject.put(hashmap);


        

Answer 1

Use JSON's putAll.

        Map<String, Object> myMap = new HashMap<String, Object>();
        JSONObject jsonObject = new JSONObject();

        jsonObject.putAll(myMap);

Answer 2

Use JSONObject constructor. DON"T CREATE YOUR OWN since you might miss some cases such when the value is an array.

JSONObject jsonObject = new JSONObject(hashMap);

This is actually a complete solution since it covers for corner cases such as where the value is an array. Thus, it will make it as JSONArray for you.

Answer 3

Iterate through the HashMap and put to the jsonObject:

Iterator it = mp.entrySet().iterator();
while (it.hasNext()) {
    Map.Entry pairs = (Map.Entry)it.next();
    jsonObject.put(pairs.getKey(), pairs.getValue() );
}