CODEWITHSUNDEEP
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trentonknight
trentonknight

Reputation: 261

Java Serialization writeObject failing without defining variables

For some odd reason I am able to write my object to a file if broken up into variables or Strings but not as shown in the tutorial as one solid Object.

EXAMPLE SUCCESS:

public Book add(Book book){
        try{
        FileOutputStream fos = new FileOutputStream("stream.txt");
        ObjectOutputStream output = new ObjectOutputStream(fos);
        output.writeObject(book.getString1());
        output.writeObject(book.getString2());
        output.writeObject(book.getString3());
        output.flush();
        output.close();
        }catch(Exception e){
            System.out.print("Falure to write!");
      }
        return book;
    }

While the following code completely bombs out and jumps to catch as soon as I attempt to write the Object:

EXAMPLE FAIL:

public Book add(Book book){
        try{
        FileOutputStream fos = new FileOutputStream("stream.txt");
        ObjectOutputStream output = new ObjectOutputStream(fos);
        output.writeObject(book);
        output.flush();
        output.close();
        }catch(Exception e){
            System.out.print("Falure to write!");
      }
        return book;
    }

Upvotes: 0

Views: 901

Answers (1)

bpgergo
bpgergo

Reputation: 16037

The Book class should implement Serializable interface

Also, what was the error message?

}catch(Exception e){
    System.out.println(e);
}

Upvotes: 1

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