创建拍卖列表(java)

时间:2019-02-13 12:04:56

标签: java eclipse

我正在尝试为拍卖创建代码,以便拍卖开始时给狗一个编号。创建的第一个拍卖将获得编号1,其次是编号2,依此类推。

问题是,拍卖代码没有按拍卖列出狗。而是按注册列出。

例如: 犬只

  • 鲍伊
  • 安娜
  • 玛雅

(拍卖过程)

命令:开始拍卖

狗名:Maya

输出:Maya已放入拍卖#2


命令:开始拍卖

狗名:Bowie

输出:Bowie已放入拍卖#0


这是我的代码:

private void startAuction() {

    boolean current = false;

    do {
        System.out.println("Dog name: ");
        String dogName = scan.nextLine().toLowerCase().trim();

        if (dogName.isEmpty()) {
            System.out.println("Error: Name can't be empty.");
            continue;           
        }

        for (int i = 0; i < dogs.size(); i++) {
            if (dogName.equals(dogs.get(i).getName())) {
                auction.add(new Auction(dogName));

                System.out.printf(dogName + " has been put up for auction in auction #%d", i);
                System.out.println();
                current = true;
                return;
            }
        }

        if (current == false) {
            System.out.println("Error: no such dog in the register");
        }
    } while(true);

我是一个初学者,有点困惑。有任何解决方法的想法吗?

1 个答案:

答案 0 :(得分:0)

这里的问题是,在获得要拍卖的狗的名字之后,您在列表中搜索该狗,并打印出该狗在列表中的位置的索引。解决此问题所需要做的是有另一个计数器变量,该变量对拍卖狗的数量进行计数,每次递增。代码看起来像这样:

    private void startAuction() {

    boolean current = false;
    int auctionCount = 1;//Declare the current auction we are on

    do {
        System.out.println("Dog name: ");
        String dogName = scan.nextLine().toLowerCase().trim();

        if (dogName.isEmpty()) {
            System.out.println("Error: Name can't be empty.");
            continue;           
        }

        for (int i = 0; i < dogs.size(); i++) {
            if (dogName.equals(dogs.get(i).getName())) {
                auction.add(new Auction(dogName));

                //Use the auction count here so that it starts at 1 and increases 
                System.out.printf(dogName + " has been put up for auction in auction #%d", auctionCount);from there
                System.out.println();
                auctionCount++;//Make sure the next auction has a number that is one larger
                current = true;
                return;
            }
        }

        if (current == false) {
            System.out.println("Error: no such dog in the register");
        }
    } while(true);
}