Android- create JSON Array and JSON Object

Question

How can I create a JSON with this format in Android: Since the API that I will be passing will parse JsonArray then the object. Or would it be okay if just to pass a json object? Since I will just have to insert 1 transaction per service call.

{
    "student": [
        {
            "id": 1,
            "name": "John Doe",
            "year": "1st",
            "curriculum": "Arts",
            "birthday": 3/3/1995
        },
        {
            "id": 2,
            "name": "Michael West",
            "year": "2nd",
            "curriculum": "Economic",
            "birthday": 4/4/1994
        }
    ]
}

What I know is only the JSONObject. Like this one.

JSONObject obj = new JSONObject();
try {
    obj.put("id", "3");
    obj.put("name", "NAME OF STUDENT");
    obj.put("year", "3rd");
    obj.put("curriculum", "Arts");
    obj.put("birthday", "5/5/1993");
} catch (JSONException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}

Any ideas. Thanks

Answer 1

Use the following code:

JSONObject student1 = new JSONObject();
try {
    student1.put("id", "3");
    student1.put("name", "NAME OF STUDENT");
    student1.put("year", "3rd");
    student1.put("curriculum", "Arts");
    student1.put("birthday", "5/5/1993");

} catch (JSONException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}

JSONObject student2 = new JSONObject();
try {
    student2.put("id", "2");
    student2.put("name", "NAME OF STUDENT2");
    student2.put("year", "4rd");
    student2.put("curriculum", "scicence");
    student2.put("birthday", "5/5/1993");

} catch (JSONException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}


JSONArray jsonArray = new JSONArray();

jsonArray.put(student1);
jsonArray.put(student2);

JSONObject studentsObj = new JSONObject();
    studentsObj.put("Students", jsonArray);



String jsonStr = studentsObj.toString();

    System.out.println("jsonString: "+jsonStr);