public class Book {
    private final String title;
    private int loans;

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

    public void recordLoan() {
        loans++;
    }

    public String description() {
        return title + " - loans: " + loans;
    }

    public static void main(String[] args) {
        Book first = new Book("Java, Brick by Brick");
        Book second = first;
        first.recordLoan();
        System.out.println(second.description());
        System.out.println(first == second);
    }
}