public class BookNode
{
    private Book data;
    private BookNode next;
    
    public BookNode()
    {
        setData(null);
        setNext(null);
    }

    public BookNode(Book someData, BookNode nextNode)
    {
        setData(someData);
        setNext(nextNode);
    }

    public Book getData()
    {
        return(data);
    }

    public BookNode getNext()
    {
        return(next);
    }

    public void setData(Book someData)
    {
        data = someData;
    }

    public void setNext(BookNode nextNode)
    {
        next = nextNode;
    }

    public String toString()
    {
        return(data.toString());
    }
}