List of items with same values

I'm creating a list of items from a file

BufferedReader reader = new BufferedReader(
    new InputStreamReader(new FileInputStream("H:/temp/data.csv")));
try {
    List<Item> items = new ArrayList<Item>();
    Item item = new Item();

    String line = null;
    while ((line = reader.readLine()) != null) {
        String[] split = line.split(",");

      开发者_Go百科  item.name = split[0];
        item.quantity = Integer.valueOf(split[1]);
        item.price = Double.valueOf(split[2]);
        item.total = item.quantity * item.price;

        items.add(item);
    }

    for (Item item2 : items) {
        System.out.println("Item: " + item2.name);
    }
} catch (IOException e) {
    reader.close();

    e.printStackTrace();
}

Problem is the list is displaying the last line in the file as the value for all items.

The problem with your code is you creating only one instance of Item Object(Item item = new Item) and the same instance is added to the list again and again.

You need to create a new instance of the Item for every line in the file and add it to the list as shown below.

Fix:

List<Item> items = new ArrayList<Item>();

String line = null;
while ((line = reader.readLine()) != null) {
    String[] split = line.split(",");

    Item item = new Item(); // New Item is created for every line
    item.name = split[0];
    item.quantity = Integer.valueOf(split[1]);
    item.price = Double.valueOf(split[2]);
    item.total = item.quantity * item.price;

    items.add(item);
}