Put Json In to Array using Gson

Hello So I am writing an online translator using Yandex free tool .
I have this program that when user clicked on btn_translate I get the from and to languages from the comboBoxes then I get the text from the text label . Sending it to the server via the curl command.
keep in mind that i'm a beginner in this field so my code can have tons of problems ...

Here is the url sample:

>
https://translate.yandex.net/api/v1.5/tr.json/translate?key=API-KEY&lang=en-fa&text=hi

and here is the Json returned by the yandex:
> {"code":200,"lang":"en-fa","text":["سلام"]}

So Here is my question:
I want to access the 3rd item in this Json as you can see it is "text" how should i do that ?

i am using Gson and i don't know how to put this Json i'm receiving in to an array which is like this :

Array[0] = 200 ( Code )

Array[1] = "en-fa" ( Lang )

Array[2] = "سلام" ( text )

and here is my code ( btn pushed part ) :

                String command = IInfo.CMD +"&lang="+combo_from.getSelectedItem()
                        +"-"+combo_to.getSelectedItem()+"&text="+txt_word.getText();

                System.out.println(command);
                System.out.println("btn pushed");

                try(Reader reader = new InputStreamReader(
                        Runtime.getRuntime().exec(command).getInputStream()
                )){
                    JsonElement json = new JsonParser().parse(reader);
                    System.out.println(json);
                } catch (IOException e)
                {
                    e.printStackTrace();
                }

and if you can explain to me how my try is working it would be awesome !
thanks.

With little changes to how you read the response you can do it like below:

JsonObject jsonObj = new JsonParser().parse(reader).getAsJsonObject()
jsonObj.get("code") ==> 200
jsonObj.get("lang") ==> "en-fa" 
jsonObj.get("text").getAsString()  ==> "سلام"