How to implement this subclass specifically to get around appending object file?

Question

I was having trouble appending object file in my program. I found this SO answer.

However, I do not know how to subclass an AppendableObjectOutputStream. Can anyone kindly teach me how in more detail?

Answer 1

class YourClass extends AppendableObjectOutputStream {
// any constructors required, if no default for Appendable
    public AppendableObjectOutputStream(<your args here>) {
        super(<other args here>);
    }
// any methods you want to @Override here
}