[Desafio: hora da prática] Está correto?

1 - Crie um programa em Java que escreva a seguinte mensagem em um arquivo chamado "arquivo.txt": "Conteúdo a ser gravado no arquivo." Utilize as classes do pacote java.io.

package Challenges04.exercise01;
import java.io.*;

public class Service {
    public void run() throws IOException, RuntimeException {
        var file = new FileWriter("Archive.txt");

        file.write("Content to be written to the file");
        file.close();
    }
}

package Challenges04.exercise01;
import java.io.IOException;

public class Main {
    public static void main(String[] args) {
        var test = new Service();

        try {
            test.run();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }
}

Saída esperada:
Archive.txt > Content to be written to the file

2 - Defina uma classe chamada Titulo com os atributos necessários. Em seguida, crie um programa que instancia um objeto Titulo, serializa esse objeto para JSON usando a biblioteca Gson e imprime o resultado.

&

3 - Modifique o programa anterior para que o JSON gerado seja formatado de maneira mais elegante. Utilize o método setPrettyPrinting para alcançar esse resultado.

package Challenges04.exercise02and03;
import com.google.gson.*;

public class Title {
    //variables
    private String title;
    private int releaseDate;
    private double duration;
    private String genders;
    private double rating;
    private String director;

    //contructor
    public Title(String title, int releaseDate, double duration, String genders, double rating, String director) {
        this.title = title;
        this.releaseDate = releaseDate;
        this.duration = duration;
        this.genders = genders;
        this.rating = rating;
        this.director = director;
    }

    //getters
    public String getTitle() {
        return title;
    }
    public int getReleaseDate() {
        return releaseDate;
    }
    public double getDuration() {
        return duration;
    }
    public String getGenders() {
        return genders;
    }
    public double getRating() {
        return rating;
    }
    public String getDirector() {
        return director;
    }

    public void serialize() {
        Gson gson = new GsonBuilder()
                .setPrettyPrinting()
                .registerTypeAdapter(Title.class, new TitleSerializer())
                .create();
        String json = gson.toJson(this);
        System.out.println(json);
    }
}

package Challenges04.exercise02and03;
import com.google.gson.*;
import java.lang.reflect.Type;

public class TitleSerializer implements JsonSerializer<Title>{
    @Override
    public JsonElement serialize(Title src, Type typeOfSrc, JsonSerializationContext context) {
        JsonObject jsonObject = new JsonObject();
        jsonObject.addProperty("Title" , src.getTitle());
        jsonObject.addProperty("Release Date", src.getReleaseDate());
        jsonObject.addProperty("Duration", src.getDuration()+ " min");
        jsonObject.addProperty("Genders", src.getGenders());
        jsonObject.addProperty("Rating", src.getRating());
        jsonObject.addProperty("Director", src.getDirector());

        return jsonObject;
    }
}

package Challenges04.exercise02and03;

public class Main {
    public static void main(String[] args) {
        var test1 = new Title("The Godfather", 1972, 175,
                "Crime, Drama", 9.2, "Francis Ford Coppola");
        var teste2 = new Title("The Conjuring", 2013, 112,
                "terror", 7.5, "James Wan");

        test1.serialize();
        teste2.serialize();
    }
}

Saída esperada:
{
  "Title": "The Godfather",
  "Release Date": 1972,
  "Duration": "175.0 min",
  "Genders": "Crime, Drama",
  "Rating": 9.2,
  "Director": "Francis Ford Coppola"
}
{
  "Title": "The Conjuring",
  "Release Date": 2013,
  "Duration": "112.0 min",
  "Genders": "terror",
  "Rating": 7.5,
  "Director": "James Wan"
}