Multiple object in array (java)

Question

I want to create objects using the result from Scanner and add them to an array.

However, each time I ask for user input for the second time, it just overwrites the first object.

How can I add multiple objects to the array?

Here's my code:

public void ajoutadd() {
    int i=0;
    boolean boucle=true;
    while(i!=2){
        Scanner thegame = new Scanner(System.in);
        System.out.print("name: \n");
        String jname = lejeu.nextLine();
        System.out.print(jname);
        Scanner qty = new Scanner(System.in);
        System.out.print("qty \n");
        int jqty = qty.nextInt();
        Scanner cat = new Scanner(System.in);
        System.out.print("cat: \n");
        String categ = cat.nextLine();
        Scanner price = new Scanner(System.in);
        System.out.print("price: \n");
        int jprice = price.nextInt();
        Game agame = new Game(jname,jqty,categ,jprice);
        System.out.print(unjeu.Nom);

        // creating the array to contain the game(s)
        ArrayList<Game> thegame = new ArrayList<Game>(); 

        thegame.add(new Game(jname,jqty,categ,jprice));

        // actually only display 1 object that is overwritten
        // each time after the loop
        System.out.println(thegame);

        i=i++;
    }
}

Answer 1

Your loop is not actually overwriting the first value. It is just creating a new ArrayList every time you loop through.

You should create one ArrayList and continously add to it.

ex.

ArrayList<Game> games = new ArrayList<Game>();
while(...) {
   ...
   games.add(...);
   ...
}

Couple notes:

• You do not have to create a new Scanner for every scan you can just use the same one (Also initialize it outside the loop like the array list).

• i=i++ could just be i++, i++ increments the variable i, it is different than i + 1. It is equivalent to i = i + 1.

• It is good practice to use the List interface for the ArrayList variable so that your code will work the same regardless of which List implementation you use.