我正在尝试制作一个程序，将 object 保存到文件中，然后从文件中读取 object。 我究竟做错了什么？

Question

I think it saves the object because it makes the.txt file but when I run the program, after I input the inputs it outputs "Error initializing stream". I am new to Java and coding in general so I was just wondering what I am doing wrong.

Here i what I get when I run the code:

"What type of costume do you want?

gorilla suit

What type of mask do you want?

gorilla "

This is your outfit.

Costume: gorilla suit

Mask: gorilla

Error initializing stream"

I would expect the contents of the object ("gorilla suit" and "gorilla") to output on the last line, but instead it outputs "Error initializing stream".

Here is the runner class:

class RunHalloween2
{
   public static void main(String[] args)
   {
      Scanner Input = new Scanner(System.in);


      Halloween outfit = new Halloween();

      System.out.println("What type of costume do you want?");
      outfit.setCostume(Input.nextLine());

      System.out.println("What type of mask do you want?");
      outfit.setMask(Input.nextLine());

      System.out.println("");
      System.out.println("This is your outfit.");
      System.out.println("Costume: " + outfit.getCostume());
      System.out.println("Mask:    " + outfit.getMask());


        try {
            FileOutputStream f = new FileOutputStream(new File("myOutfit.txt"));
            ObjectOutputStream o = new ObjectOutputStream(f);

            // Write objects to file
            o.writeObject(outfit);

            o.close();
            f.close();

            FileInputStream fi = new FileInputStream(new File("myOutfit.txt"));
            ObjectInputStream oi = new ObjectInputStream(fi);

            // Read objects

            outfit = (Halloween) oi.readObject();


            System.out.println(outfit.toString());

            oi.close();
            fi.close();

        } catch (FileNotFoundException e) {
            System.out.println("File not found");
        } catch (IOException e) {
            System.out.println("Error initializing stream");
        } catch (ClassNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }

}

Answer 1

As per me There can be 2 mistake:-

1 - Your file name is myOutfit.txt but it should be myOutfit.ser .

2 - Your Halloween class does not implements serilization.

public class Halloween implements java.io.Serializable