java - Java FileNotFoundException错误，因为语句不在方法中

我有2个文件，其中1（OrderCatalogue.java）读取外部文件的内容，而2（以下）。但是我在此行“ OrderCatalogue catalogue = new OrderCatalogue（）;”中遇到“必须捕获或声明要抛出FileNotFoundException”错误。我知道这是因为它不是一种方法。但是，如果我尝试将其放入方法中，则“ getCodeIndex”和“ checkOut”方法下的代码将无法处理“包目录不存在”的错误消息。任何人都知道如何编辑代码以使它们正常工作吗？谢谢！！

public class Shopping {

OrderCatalogue catalogue= new OrderCatalogue();
ArrayList<Integer> orderqty = new ArrayList<>(); //Create array to store user's input of quantity
ArrayList<String> ordercode = new ArrayList<>(); //Create array to store user's input of order number

    public int getCodeIndex(String code)
    {
        int index = -1;

        for (int i =0;i<catalogue.productList.size();i++)
        {
            if(catalogue.productList.get(i).code.equals(code))
            {
            index = i;
            break;
            }
        }
        return index;
    }
    public void checkout()
    {
         DecimalFormat df = new DecimalFormat("0.00");
         System.out.println("Your order:");
         for(int j=0;j<ordercode.size();j++)
         {
            String orderc = ordercode.get(j);

            for (int i =0;i<catalogue.productList.size();i++)
            {
                if(catalogue.productList.get(i).code.equals(orderc))
                {
                    System.out.print(orderqty.get(j)+" ");
                    System.out.print(catalogue.productList.get(i).desc);
                    System.out.print(" @ $"+df.format(catalogue.productList.get(i).price));
                }
            }
        }

    }

这是我的OrderCatalogue文件

public OrderCatalogue() throws FileNotFoundException

{

    //Open the file "Catalog.txt"
           FileReader fr = new FileReader("Catalog.txt");
           Scanner file = new Scanner(fr);


           while(file.hasNextLine())
           {
               //Read in the product details in the file
               String data = file.nextLine();
               String[] result = data.split("\\, ");

               String code = result[0];
               String desc = result[1];
               String price = result[2];
               String unit = result[3];

               //Store the product details in a vector
               Product a = new Product(desc, code, price, unit);

               productList.add(a);
           }

最佳答案

似乎OrderCatalogue构造函数抛出FileNotFoundException。您可以在Shopping构造函数中初始化目录并捕获异常，或将其声明为引发FileNotFoundException。

public Shopping() throws FileNotFoundException
{
        this.catalogue= new OrderCatalogue();

要么

public Shopping()
    {
            try{
                this.catalogue= new OrderCatalogue();
            }catch(FileNotFoundException e)
                blah blah
            }