//Book.javapublic enum Book {		//declare constants of enum type	JHTP("Java How to Program", "2012"),	CHTP("C How to Program", "2007"),	CPPHTP("C++ How to Program", "2012");		//instance fields	private final String title;	private final String copyrightYear;		//enum constructor	Book(String bookTitle, String year)	{		title = bookTitle;		copyrightYear = year;			}	public String getTitle()	{		return title;	}	public String getCopyrightYear()	{		return copyrightYear;	}}

//EnumTest.javaclass EnumTest {	public static void main(String[] args)	{		System.out.println("All books:\n");				for(Book book : Book.values())		{			System.out.printf("%-10s%-45s%s\n", 					book, book.getTitle(), book.getCopyrightYear());		}	}}