Create a JSONArray in Java

Question

How can I create a JSONArray, since creating a JSONObject is quite simple:

JSONObject j = new JSONObject();
j.put("key",value);

Right now I can put another string in the JSONObject, or a string representation of a JSONObject.

But how can I create a JSONArray and insert it to the JSONObject?

This should help: stackoverflow.com/a/2544198/1472887

D-32
– D-32

2012-11-07 11:29:01 +00:00
Commented Nov 7, 2012 at 11:29 — D-32
– D-32, Commented Nov 7, 2012 at 11:29
Check this thread: stackoverflow.com/questions/7976643/…

suhas_sm
– suhas_sm

2012-11-07 11:30:18 +00:00
Commented Nov 7, 2012 at 11:30 — suhas_sm
– suhas_sm, Commented Nov 7, 2012 at 11:30

Paresh Mayani · Accepted Answer · 2012-11-07 11:29:24Z

14

But how can I create a JSONArray and insert it to the JSONObject?

You can create JSONArray same like you have tried to create JSONObject.

Creating time:

For example:

JSONArray myArray = new JSONArray();
JSONObject j = new JSONObject();
j.put("key",value);
j.put("array",myArray);

Retrieving time:

you can fetch the value of String or JSONObject or any by their key name. For example:

JSONArray myArray = objJson.getJSONArray("array");

answered Nov 7, 2012 at 11:29

Paresh Mayani

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Comments

Nermeen · Accepted Answer · 2021-03-30 09:48:08Z

7

You can do it like:

String[] data = {"stringone", "stringtwo"};
JSONArray json = new JSONArray(Arrays.toString(data));

Or, create a JSONArray object and use the put method(s) to add any Strings you want. To output the result, just use the toString() method.

edited Mar 30, 2021 at 9:48

answered Nov 7, 2012 at 11:29

Nermeen

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2 Comments

IgorGanapolsky Over a year ago

Why are you passing a List into constructor of JSONArray? It should just accept a String.

nimi0112 Over a year ago

I was not able to solve my problem by this so I used JSONArray json = new JSONArray(Arrays.toString(array));

Mohd Mufiz · Accepted Answer · 2012-11-07 11:53:52Z

6

Why dont you use Gson library its very easy to convert any object into json array, json object

Download Gson library then use like

Gson gson=new Gson();

String json=gson.toJson(object);

if Object is of List object it will create json array

Gson gson = new Gson();

reverse parsing for array -- 
        listObject = gson.fromJson(json,
                new TypeToken<List<ClassName>>() {
                }.getType());

for single object

object = gson.fromJson(json, ClassName.class);

answered Nov 7, 2012 at 11:53

Mohd Mufiz

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