java - 输入不匹配异常错误，

Question

程序编译并完美运行，直到我尝试在 main 中执行我的加载方法。程序崩溃并给我一个输入不匹配异常零件编号 = scan.nextInt(); .....有人知道为什么吗？

public static InventoryManager load(String fileName) throws IOException,ClassNotFoundException
{
    Scanner fileScan = new Scanner (new File(fileName));
    Scanner stringScan;
    InventoryManager StockChart = new InventoryManager();

   // Part variables
   String record = "";
   int partNumber=0;
   String description="";
   int qty=0; 
   double cost = 0.00; 


  while(fileScan.hasNext())
  {
     record = fileScan.nextLine();
     stringScan = new Scanner (record);
     stringScan.useDelimiter("  ");     //allows for separation when reading 
     partNumber = stringScan.nextInt(); // scans part number
     description = stringScan.next();   // scans description 
     qty = stringScan.nextInt();        // scans the qty on hand 
     cost = stringScan.nextDouble();    // scans the item cost 

     //create new part object for each line in file 
     StockChart.addStock(new Stock(partNumber,description, qty,cost)); 

  }


    return StockChart; // return new list back to InventoryClerk program 
}

文本文件的格式如下(忽略之间的空格):

1117[选项卡]1/2-13 FHN[选项卡]450[选项卡]6.11

1118[tab]1/2-13 FHN[tab]100[tab]0.23

1119[选项卡]1/2-13 FHN[选项卡]100[选项卡]4.11

Answer 1

比使用 stringScan Scanner 对象更好的方法是简单地使用 String.split在记录字符串

上

例如

while(fileScan.hasNext())
{
   record = fileScan.nextLine();
   String el[] = record.split (" ");
   partNumber = Integer.parseInt (el[0]);
   description = el[1];
   // etc