Write a member of a class in a csv file

Question

I'm working on a project where I have a class called dog and I want the user to insert a new dog and then save it on a csv file.

public static void insert(){
        List<Dog> dogs = new ArrayList<>();
        String c;
        do {
            System.out.println("Insert new dog:");
            
            
            dogs.add(new Dog());

            System.out.print("Do you want to continue? (y/n): ");
            c = console.readLine();
            
        } while (c.equalsIgnoreCase("y"));


        try (BufferedWriter writer = new BufferedWriter(new FileWriter("macchine.txt"))) {
            for (Dog dog : dogs) {
                writer.write(macchina.toString());
                writer.newLine();
            }
     
        } catch (IOException e) {
            System.out.println(e.getMessage());
        }
    }

How can I do it?

Answer 1

Modify your toString function like this:

public String toString(){
    return super.getproduttore() + ";" + this.getnome() + ";" + Integer.toString(this.getnumporte()) + ";" + Double.toString(super.getvmax()) +";" + Double.toString(super.getacc()) ;
}

and provide an header row like this:

String header = "Produttore;Modello;Numero di porte;Accelerazione(0-100 km/h);Velocità massima (km/h)";

write this row to .csv (change .txt with .csv) file before for loop

writer.write(header);
for (Macchina macchina : macch...