How do I write an object to a file and read it back?

Question

I will need your help because I want to write an object in a file and read it back.

I have a problem with this line of code: Vehicule result = (Vehicule) read.readObject ();

try {
       List<Vehicule> voiture = new ArrayList<Vehicule>();

       //Write object to file 
       FileOutputStream fos = new FileOutputStream("Garage.ser");
       ObjectOutputStream ecriture = new ObjectOutputStream(fos);
       System.out.println("\nIci - Ecriture de mon fichier\n");
       ecriture.writeObject(voiture);
       ecriture.close();
       //read object from file
       FileInputStream fis = new FileInputStream("Garage.ser");
       ObjectInputStream lecture = new ObjectInputStream(fis);
        System.out.println("\nIci - Lecture du fichier\n");
        Vehicule result = (Vehicule) lecture.readObject();
        lecture.close();

   }catch (FileNotFoundException e){
       System.out.println("Aucune voitures sauvegardé !");
   }catch (IOException e) {
       e.printStackTrace();
   }catch (ClassNotFoundException e) {
       e.printStackTrace();
   }

Thank you for your help.

Answer 1

It seems you're writing a List<Vehicule> but read a Vehicule.