// Testing enum type Book.
import java.util.EnumSet;

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

        System.out.println( "\nDisplay a range of enum constants:\n" );

        // print first four books
        for ( Book book : EnumSet.range( Book.JHTP, Book.CPPHTP ) )
            System.out.printf( "%-10s%-45s%s\n", book,
                book.getTitle(), book.getCopyrightYear() );
    } // end main
} // end class EnumTest