public class Book
{
    private String title;
    private String author;
    private String summary;

    public Book() {
        title = "";
        author = "";
        summary = "";
    }

    public Book(String title, String author, String summary) {
        this.title = title;
        this.author = author;
        this.summary = summary;
    }

    public String getTitle() {
        return title;
    }

    public String getAuthor() {
        return author;
    }

    public String getSummary() {
        return summary;
    }
}

import java.util.*;

public class Library
    {
        private String location;
        private String openingHours;
        private Book book;
        private Map<Book,Integer> bookList = new HashMap<Book,Integer>();

        public Library(String location, String openingHours) {
            this.location = location;
            this.openingHours = openingHours;
        }

        public void addBook(Book book) {
            //If the book doesn't exist add it: otherwise increase the quantity of the book
            if (bookList.containsKey(book))
                bookList.put(book, bookList.get(book) + 1);
            else
                bookList.put(book, 1);
        }

        public String printOpeningHours() {
            return openingHours;
        }

        public String printAddress() {
            return location;
        }

        public void borrowBook(Book book) {
            bookList.put(book, bookList.get(book) - 1);
        }

        public void returnBook() {
            bookList.put(book, bookList.get(book) + 1);
        }

        public String printAvailableBooks() {
            ArrayList <String> available = new ArrayList();

            for (Book books: bookList.keySet())
                available.add(books.toString());

            return available.toString();
        }

        public boolean isBorrowed() {
            int value = 0;

            for (Book bq: bookList.keySet()) {
                value = bookList.get(bq);
                if (value > 0)
                    return true;
            }
            return false;
        }

        public static void main(String[] args) {
            Library l1 = new Library("111 Your Street", "9am");
            l1.addBook(new Book("Test", "Author", "Test summary"));
            l1.addBook(new Book("Test2", "Author2", "Test summary2"));
            l1.addBook(new Book("Test3", "Author3", "Test summary3"));
            System.out.println(l1.printAvailableBooks());
        }
    }