Java API call Example using GSON, org.json.json and Jackson [ Simple Get Call] and parsing result as JSON

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.gson.*;
import org.json.JSONArray;
import org.json.JSONObject;

import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;

public class APICALL {

    public static void main(String[] args) throws IOException {
//        String url="https://mocki.io/v1/19a50724-c2e5-46a1-b457-543462cdfde2";
        String url="https://jsonplaceholder.typicode.com/users";
        String line;
        StringBuilder resp=new StringBuilder();
        System.out.println(url);
        HttpURLConnection con= (HttpURLConnection) new URL(url).openConnection();
        con.setRequestMethod("GET");
        con.setRequestProperty("Accept","application/json");
        System.out.println(con.getResponseMessage());
        System.out.println(con.getContentType());
        InputStream inputStream=con.getInputStream();
        BufferedReader reader=new BufferedReader(new InputStreamReader(inputStream));

        while ((line=reader.readLine())!=null)
        {
            resp.append(line);
        }

        System.out.println(resp.toString());
        System.out.println("Outputsss");
        FileOutputStream fileOutputStream=new FileOutputStream("resp.txt");
        fileOutputStream.write(resp.toString().getBytes());


        System.out.println("==================Using org.json.json ================== ");
        JSONArray jsonArray=new JSONArray(resp.toString());



       for (int i=0;i<jsonArray.length();i++)
       {
           JSONObject jsonObject=jsonArray.getJSONObject(i);
           System.out.println(jsonObject.get("name")+"--"+jsonObject.get("email"));
       }
        System.out.println("Printed total "+jsonArray.length());


        System.out.println("==================Using Jackson methods==================");

        JsonNode jsonNode=new ObjectMapper().readTree(resp.toString());

    jsonNode.forEach(x-> System.out.println(x.get("name")+"--"+x.get("email")));

//    using GSOn
        System.out.println("==================Using Gson==================");

        JsonElement jsonElement=JsonParser.parseString(resp.toString());
        JsonArray jar=jsonElement.getAsJsonArray();
        for (int i=0;i<jar.size();i++)
        {
            JsonObject jsonObject=jar.get(i).getAsJsonObject();
            System.out.println(jsonObject.get("name")+"--"+jsonObject.get("email"));
        }
        System.out.println("Printed total "+jar.size());


    }
}