* A class that maintains information on a library book.
* This might form part of a larger application such
* as a library system, for instance.
* @author Geoff McKeown and (Insert your name here.)
* @version (Insert today's
* Demonstrates the use of the Library and LibraryBook classes
* and of the use of simple GUIs in Java.
* @author (add name)
* @version (add date)
public class LibraryBo