hibernate多表联查，如何输出特定的某元素

User对象类

  private Integer userId;
    private String userName;
    private String userPhone;
    private Set books = new HashSet(0);

Book对象类

  private Integer bookId;
    private User user;
    private String bookName;
    private String bookPrice;

测试

    User user;
        UserDAO userdao = new UserDAO();
        user = userdao.findById(3);
        Set<Book> set = user.getBooks();
        Iterator<Book> it = set.iterator();  
        for (Book book : set) {  
              System.out.println(book.getBookName());  
        }  

上面是我写的代码，可以查询user对象总共有多少本book，怎么按顺序输出呢？

懒加载查询语句加上排序即可