未报告的异常 java.io.FileNotFoundException;必须被抓住或宣布被扔掉 6

Question

我们一直在运行此错误。目标是将数组中的数据读入输出文件。感谢您的帮助！

public static void save(Salesperson[] array)

  {
     PrintStream outfile = null;
     try
     {
        outfile = new PrintStream(new FileOutputStream("data.txt"));
     }
        catch(FileNotFoundException e)
        {
           JOptionPane.showMessageDialog(null,"The file could not be created.");
        }
         System.setOut(new PrintStream(new FileOutputStream("output.txt")));
     for(int k = 0; k < array.length; k++)
     {
        System.out.println(array[k]);
     }

     outfile.close();
     System.out.println("Saved.");

  }

Answer 1

您收到错误是因为有一个 checked exception 与您未捕获的 FileOutputStream 相关联/throw-声明。