[Desafio: hora da prática] Está correto?

1 - Crie um programa em Java que utilize as classes HttpClient, HttpRequest e HttpResponse para fazer uma consulta à API do Google Books. Solicite ao usuário que insira o título de um livro, e exiba as informações disponíveis sobre o livro retornado pela API.

package Challenges.exercise01;
import java.io.IOException;
import java.io.InterruptedIOException;
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.util.Scanner;
import com.google.gson.Gson;
import com.google.gson.JsonArray;
import com.google.gson.JsonObject;

public class Service {
    Scanner scanner = new Scanner(System.in);
    Gson gson = new Gson();
    private String title = scanner.nextLine();
    private String apiKey = "";

    public String getTitle() {
        return title;
    }

    HttpClient client = HttpClient.newHttpClient();
    HttpRequest request = HttpRequest.newBuilder()
            .uri(URI.create("https://www.googleapis.com/books/v1/volumes?q=" + title + "&maxResults=1&key=" + apiKey))
            .build();
    HttpResponse<String> response;

    {
        try {
            response = client.send(request, HttpResponse.BodyHandlers.ofString());
            String responseBody = response.body();
            JsonObject jsonResponse = gson.fromJson(responseBody, JsonObject.class);
            JsonArray items = jsonResponse.getAsJsonArray("items");
            for (int i = 0; i < items.size(); i++) {
                JsonObject item = items.get(i).getAsJsonObject();
                JsonObject volumeInfo = item.getAsJsonObject("volumeInfo");
                String title = volumeInfo.get("title").getAsString();
                String authors = volumeInfo.getAsJsonArray("authors").toString();
                System.out.println("Title: " + title + ", Authors: " + authors);
            }
        } catch (IOException e) {
            throw new RuntimeException(e);
        } catch (InterruptedException e) {
            throw new RuntimeException(e);
        }
    }
}

package Challenges.exercise01;

public class Main {
    public static void main(String[] args) {
        System.out.println("Enter the name of the book you want to search for");

        Service service = new Service();
        service.getTitle();
    }
}

Saída esperada:
Enter the name of the book you want to search for
Starwars
Title: STAR WARS - Herdeiro do Império, Authors: ["Timothy Zahn"]

2 - Crie um programa Java que utiliza as classes HttpClient, HttpRequest e HttpResponse para fazer uma consulta à API CoinGecko e exiba a cotação atual de uma criptomoeda escolhida pelo usuário.

package Challenges.exercise02;

import com.google.gson.Gson;
import com.google.gson.JsonArray;
import com.google.gson.JsonObject;
import java.io.IOException;
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.util.Scanner;

public class Service {
    Scanner scanner = new Scanner(System.in);
    Gson gson = new Gson();
    private String criptoName = scanner.nextLine();

    HttpClient client = HttpClient.newHttpClient();
    HttpRequest request = HttpRequest.newBuilder()
            .uri(URI.create("https://api.coingecko.com/api/v3/simple/price?ids=" +criptoName+ "&vs_currencies=brl"))
            .build();
    HttpResponse<String> response;

    {
        try {
            response = client.send(request, HttpResponse.BodyHandlers.ofString());
            String responseBody = response.body();
            JsonObject jsonResponse = gson.fromJson(responseBody, JsonObject.class);
            JsonObject criptoObject = jsonResponse.getAsJsonObject(criptoName);

            if (criptoObject != null) {
                // Acessa o valor em reais
                String value = criptoObject.get("brl").getAsString();
                System.out.println("Crypto: " +criptoName+
                        "\n Value: " +value);
            } else {
                System.out.println("Crypto not found: " + criptoName);
            }

        } catch (IOException e) {
            throw new RuntimeException(e);
        } catch (InterruptedException e) {
            throw new RuntimeException(e);
        }
    }
}

package Challenges.exercise02;

public class Main {
    public static void main(String[] args) {
        System.out.println("Enter the cryptocurrency name to see the quote");

        var service = new Service();
    }
}

Saída esperada:
Enter the cryptocurrency name to see the quote
bitcoin
Crypto: bitcoin
 Value: 347994