public class Book {
    String title;
    double uniqueid;
    int bookcount;
    int number;

    public Book(String title) {
        this.title = title;
    }
 
    public String toString() {
        return ("the title is" + title + "the unique id is" + uniqueid + "the bookcount is" + bookcount);
        
    }

    public String gettitle() {
        return title;
    }

    public void generateuniqueid() {
        // uniqueid = Math.random() * 1000;
        uniqueid = System.currentTimeMillis() + Math.random();
        
    }

    public double getuniqueid() {
        return uniqueid;
    }

    public int getbookcount() {
        return bookcount;
    }

    public static void main(String[] args) {

        Book test = new Book("test");
        test.generateuniqueid();
        System.out.println(test.getuniqueid());
        System.out.println(test.getbookcount());
        System.out.println(test.gettitle());

        Book test2 = new Book("Harry Potter");
        test2.generateuniqueid();
        System.out.println(test2.getuniqueid());
        System.out.println(test2.getbookcount());
        System.out.println(test2.gettitle());
        
    
    }
    
    

}
Book.main(null);
1.6820926083556812E12
0
test
1.682092608357625E12
0
Harry Potter