print multi dimentional json array in java

Question

My app fetches JSON response from server. The response string has multiple rows and columns. I need to print this in java.

Here is my JSON response :

[
  {
    "name": "name2",
    "id": "99",
    "email": "ad@e.com"
  },
  {
    "name": "zca",
    "id": "96",
    "email": "as2c2@d.d",
  }
]

this is java part :

    OkHttpClient client = new OkHttpClient();

    String url = ServerConstants.BROWSE_URL;
    //String url = "https://reqres.in/api/users?page=2";

    Request request = new Request.Builder()
            .url(url)
            .build();

    client.newCall(request).enqueue(new Callback()
    {
        @Override
        public void onFailure(Call call, IOException e)
        {
            e.printStackTrace();
        }

        @Override
        public void onResponse(Call call, Response response) throws IOException
        {
            if (response.isSuccessful())
            {
                final String myResponse = response.body().string();
                //System.out.println(Arrays.asList(new BundleFunctions().MakeArrayListFormJSON(myResponse)));
                bundle = new BundleFunctions().MakeBundleFromJSON(myResponse);
                //System.out.println("this is size ------- "+bundle.size());
                //System.out.println("this is response ------ "+myResponse);
                Browse.this.runOnUiThread(new Runnable()
                {
                    @Override
                    public void run()
                    {
                        tv.setText(myResponse);

                        Set<String> keys = bundle.keySet();

                        for(String key : keys)
                        {
                            Object o = bundle.get(key);
                        }
                    }
                });
            }
        }
    });

I need a print on each person like this in java :

(Person number is according to array index FCFS)

Person 1 - Name : name2 , id : 99 , email : ad@e.com

Person 2 - Name : zca , id : 96 , email : as2c2@d.d

Please show me the simplest way to do this

Android has built in classes to handle JSON such as JSONArray and JSONObject. use them, then it is a simple matter of looping through the JSONarray — Bentaye, Mar 22 '19 at 15:30
@Christopher please have a look. this method only get 1 row not the whole thing by Object o — NinjaStar, Mar 22 '19 at 15:34

score 1 · Answer 1 · answered Mar 22 '19 at 15:33

1

JSON is really clear, which is Array of Objects in your case Person object, create Person POJO class

Person

public class Person {

 private String name;

 private String id;

 private String email;

 // getters and setters

 }

Parse the above json to List<Person> and print each Person as you like them

answered Mar 22 '19 at 15:33

Ryuzaki L

37,302
12
68
98

[java updated] How can i do that ? if i use Object o , it only catches 1 row – NinjaStar Mar 22 '19 at 15:36
show this `bundle = new BundleFunctions().MakeBundleFromJSON(myResponse);` bundle @NinjaStar – Ryuzaki L Mar 22 '19 at 15:38
https://pastebin.com/naDgcuqs – NinjaStar Mar 22 '19 at 15:40
That's not right approach, you need to parse Json String to `List` i believe you are using `json` library @NinjaStar – Ryuzaki L Mar 22 '19 at 15:43
no i am not using library, but which one should i use? – NinjaStar Mar 22 '19 at 15:44
check this https://stackoverflow.com/questions/20534862/how-to-efficiently-map-a-org-json-jsonobject-to-a-pojo – Ryuzaki L Mar 22 '19 at 15:47

score 0 · Answer 2 · answered Mar 22 '19 at 15:36

0

Your example of JSON doesn't looks multi dimensional array. It's an array with bunch of objects into it. If this is for java, why not use jackson or GSon or library like that to obtain object in an array list! All you have to define is a POJO object with matching variable names with getters and setters.

answered Mar 22 '19 at 15:36

ringadingding

475
5
14

can you show me an easy example please? – NinjaStar Mar 22 '19 at 15:37
download GSon lib from google. Take the object created by Deadpool, you can find reference : http://tutorials.jenkov.com/java-json/gson.html – ringadingding Mar 22 '19 at 15:48

print multi dimentional json array in java

2 Answers2