Add a constructor and a copy constructor to the Book class created in question #13.

Question

What will be an ideal response?

Answer 1

```
public Book(String t, String a)
{
title = t;
author = a;
setISBN(null);
setYearPublished(0);
}
public Book(String t, String a, String i, int y)
{
title = t;
author = a;
setISBN(i);
setYearPublished(y);
}
public Book(Book original)
{
if(original == null)
{
System.out.println("Fatal error");
System.exit(0);
}
title = original.title;
author = original.author;
ISBN = original.ISBN;
yearPublished = original.yearPublished;
}
```