public class Library {

    Book[] books = new Book[3];
    
    public Library(Book b1, Book b2, Book b3) {
	books[0]=b1;
	books[1]=b2;
	books[2]=b3;
    }

    public Book search(String title, String author, int year, Size sz) {
	Book book = new Book(title, author, year, sz);
	for (int i=0;i<3;i++) {
	    if (book.equals(books[i])) {
		return books[i];
	    }
	}
	return null;
    }
    
    public static void main(String[] args) {
        Size sz  = new Size(); //default constructor height=11, width=8.5

	Book tb1 = new Book("T1", "A1", 1991, sz);
	Book tb2 = new Book("T2", "A1", 1991, sz);
	Book tb3 = new Book("T3", "A1", 1991, sz);
	Library library = new Library(tb1, tb2, tb3);

	Book result = library.search("T2", "A1", 1991, sz);

	System.out.println("Found " + result.getTitle());
	if (result.getAvailable()) {
	    System.out.println("Hey great, it's available!!!!");
	}
	result.checkOut();
	if (result.getAvailable()) {
	    System.out.println("One more copy is available!");
	} else {
	    System.out.println("OK -- the last copy is checked out.");
	}
    }
}