Example parse nested JSON array and Object Java


Parsing JSON in Java is same as with another language, but a little bit complex. I use JSON-Simple for parsing JSON and accessing nested JSON array and Object. For example, I have JSON nested structure like :

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{
  "items": [
    {
      "kind": "shopping#product",
      "id": "tag:google.com,2010:shopping/products/10048/187970250782485989",
      "product": {
          "country": "US",
          "language": "en",


Now we will access “items” which have array() inside.

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JSONObject responseObject = new JSONObject(resp);
JSONArray array = responseObject.getJSONArray("items");
       
for(int i=0; i<array.length(); i++) {
     // Do something here ….
}

We can show “kind” value in “items” by :

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JSONObject responseObject = new JSONObject(resp);
JSONArray array = responseObject.getJSONArray("items");
       
for(int i=0; i<array.length(); i++) {
    String title = array.getJSONObject(i).getString("kind");
}

Then, we need to access “country” value inside “product”.

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JSONObject responseObject = new JSONObject(resp);
JSONArray array = responseObject.getJSONArray("items");
       
for(int i=0; i<array.length(); i++) {
    String title = array.getJSONObject(i).getString("kind");

    JSONObject product = new JSONObject(array.getJSONObject(i).getString("product"));
    String country = product.getString("country");
}

Seems it’s a little bit hard it first time, but soon you will adapt and see it easy to do 🙂


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