Got half of data from JSON response

I have JSON response from retrofit which is:

    {
  "rates": {
    "CAD": 1.5299,
    "HKD": 8.3625,
    "ISK": 155.7,
    "PHP": 54.805,
    "DKK": 7.4689,
    "HUF": 365.15,
    "CZK": 27.539,
    "AUD": 1.8004,
    "RON": 4.8307,
    "SEK": 10.952,
    "IDR": 17918.68,
    "INR": 82.216,
    "BRL": 5.6893,
    "RUB": 82.8075,
    "HRK": 7.63,
    "JPY": 117.1,
    "THB": 35.601,
    "CHF": 1.0547,
    "SGD": 1.5489,
    "PLN": 4.5765,
    "BGN": 1.9558,
    "TRY": 7.2296,
    "CNY": 7.6476,
    "NOK": 11.2628,
    "NZD": 1.8423,
    "ZAR": 20.2642,
    "USD": 1.0785,
    "MXN": 26.547,
    "ILS": 3.9267,
    "GBP": 0.8785,
    "KRW": 1332.82,
    "MYR": 4.7006
  },
  "base": "EUR",
  "date": "2020-04-03"
}

I wanted to store all data of rates object in Map, and this is weird, but I don't have all the data from rates. This is what I get.

I/System.out: ISK 54.805
I/System.out: HRK 117.1
I/System.out: DKK 365.15
I/System.out: CAD 8.3625
I/System.out: USD 26.547
I/System.out: BGN 7.2296
I/System.out: THB 1.0547
I/System.out: CNY 11.2628
I/System.out: RON 10.952
I/System.out: SGD 4.5765
I/System.out: ILS 0.8785
I/System.out: KRW 4.7006
I/System.out: CZK 1.8004
I/System.out: IDR 82.216
I/System.out: NZD 20.2642
I/System.out: BRL 82.8075

It's like half of the JSON data, what happened out there?

Here's some code:

Api

    public interface ApiCall  {
    @GET("latest")
    Call<JsonObject> getTest();
}

MainActivity

    public class MainActivity extends AppCompatActivity {
    private static final String TAG = "MainActivity";
    JsonObject jsonObject;
    JSONObject asd;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        test();
    }

    public void test() {
        Retrofit retrofit = new Retrofit.Builder()
                .baseUrl("https://api.exchangeratesapi.io/")
                .addConverterFactory(GsonConverterFactory.create())
                .build();

        ApiCall call = retrofit.create(ApiCall.class);
        call.getTest().enqueue(new Callback<JsonObject>() {
            @Override
            public void onResponse(Call<JsonObject> call, Response<JsonObject> response) {
                if (!response.isSuccessful()) {
                    Log.d(TAG, "onResponse: error " + response.code());
                }
                
                Map<String, Double> TEST = new HashMap<>();

                //////////////////////////
                jsonObject = response.body().getAsJsonObject();
                try {
                    asd = new JSONObject(String.valueOf(jsonObject));
                } catch (JSONException e) {
                    e.printStackTrace();
                }

//                JSONObject plop = response.body().getJSONObject("rates");
                try {
                    JSONObject rates = asd.getJSONObject("rates");
                    Iterator<String> cur = rates.keys();
                    while (cur.hasNext()){
                        TEST.put(cur.next(), rates.getDouble(cur.next()));
                    }
                } catch (JSONException e) {
                    e.printStackTrace();
                }
                for (Map.Entry<String, Double> entry : TEST.entrySet()) {
                    String key = entry.getKey();
                    Object value = entry.getValue();

                    System.out.println(key+" "+value+"\n");
                }
            }
            @Override
            public void onFailure(Call<JsonObject> call, Throwable t) {
                Log.d(TAG, "onFailure: " + t.getMessage());
            }
        });
    }
}

How do I deal with it? Can I have any hints?
**Sorry for messy code ^^

Your problem is following part of the code:

while (cur.hasNext()){
  TEST.put(cur.next(), rates.getDouble(cur.next()));
}

As you can see, in each iteration of the loop, next() is called twice, causing only half elements to be put in the map.

What you should do is, call next() only once, but save result in some temporary variable. Then, extract the values that you need using that temporary variable.

This should work:

while (cur.hasNext()){
  String key = cur.next();

  TEST.put(key, rates.getDouble(key));
}