JSONObject obj = new JSONObject();
names.moveToFirst();
            do {
                String name   = names.getString(indexName);
                //Log.e("Name new:", name);
                String number = names.getString(indexNumber);
                //Log.e("Number new:","::"+number);

                obj.put(name, number);
            } while (names.moveToNext());

{
    "Jirsong Stdnt":"+919085445756",
    "Nazrul ka":"+919855678023",
    "Sofia Stdnt":"+919112310659"
}