我是Java新手,所以如果我犯了一个非常简单的错误,请原谅我。我正在尝试在基于文字的冒险游戏中购物。我创建了一个数组shopItems
,该数组将项目列表存储为商店可以出售的字符串。这是我用于用户在游戏中进行购买的方法的一部分。
String request = s.nextLine().toLowerCase();
for (int i = 0 ; i < shopItems.length ; i++)
{
if(request.equalsIgnoreCase(shopItems[i]))
{
System.out.println("We have this item in stock! That will be " + itemPrice[i] + " gold, "
+ "would you like to purchase this item?");
String command2 = s.nextLine().toLowerCase();
if(command2.equals("yes") || command2.equals("y"))
{
if (savings >= itemPrice[i])
{
System.out.println("Congratulations! You have purchased " + shopItems[i] + ". Thank you "
+ "for your business.");
savings = savings - itemPrice[i];
inv.add(shopItems[i]);
magicShopPurchase();
}
else if (savings < itemPrice[i])
{
System.out.println("I'm sorry, you don't have enough gold to purchase this item! Try "
+ "again when you have enough!");
}
}
}
else if(request.equals("leave"))
{
System.out.println("Thank you! Please come again soon!");
inMagicShop();
}
else
{
System.out.println("I'm sorry, we don't have any of those in stock at the moment. Would you "
+ "like to purchase a different item?");
String command2 = s.nextLine().toLowerCase();
if(command2.equals("yes") || command2.equals("y"))
{
magicShopPurchase();
}
else if(command2.equals("no") || command2.equals("n"))
{
System.out.println("Thank you! Please come again soon!");
inMagicShop();
}
else
{
System.out.println("Haha, you kiss your mother with that mouth? Come back some other time!");
inMagicShop();
}
}
}
我正在尝试将扫描仪输入与
shopItems
进行比较,以检查用户要购买的商品在商店中是否可用,但是它无法识别shopItems
中的任何元素。我在使用此方法时是否做错了/某处有错误?这是我在这里的第一篇文章,所以如果我遗漏了任何重要内容,请原谅我。编辑
首先是在哪里调用将元素存储到
shopItems
的方法。try {
itemList = new String(Files.readAllBytes(Paths.get("C:\\Users\\gravy_000\\Desktop\\Software Development 1\\GameProject\\src\\hallSim\\magicitems.txt")));
read(itemList);
} catch (IOException e) {
e.printStackTrace();
}
第二个是我用来读取文本文件并将其存储到
shopItems
的方法。public static void read(String shopList) {
shopItems = shopList.split("\\r?\\n");
}
这是Dropbox中文本文件的链接
https://www.dropbox.com/s/rbfsr1fj2yzus1q/magicitems.txt?dl=0
最佳答案
问题是您要告诉用户未找到该项目,第一次request.equalsIgnoreCase(shopItems[i])
返回false,而不是当request
不存在时返回。
因此,您应使用类似以下代码的代码替换代码:
String request = s.nextLine().toLowerCase();
if(request.equals("leave")) {
//leave
} else {
boolean isItemInStock = false;
for (int i = 0 ; i < shopItems.length ; i++) {
if(request.equalsIgnoreCase(shopItems[i])) {
isItemInStock = true;
break;
}
}
if(isItemInStock) {
System.out.println("We have this item in stock! That will be " + itemPrice[i] + " gold, "
+ "would you like to purchase this item?");
//...
} else {
System.out.println("I'm sorry, we don't have any of those in stock at the moment. Would you "
+ "like to purchase a different item?");
//...
}
}
注意使用
request
处理内容的if / else语句如何在主循环之外。