returning a copy of an object which is same as the original

package Test;
public class Test {
    class Book implements Cloneable {
        int bookID = 0;
        public void setID(int i) {
            this.bookID = i;
        }
    }
    class bookFactory {
        Book b;
        bookFactory() {
            b = new Book();
            b.setID(20);
        }
        public Book GetBooks() {
            return b;
            //now i want to
            //return a copy of b but it should be in the original state
        }
    }
}

i tried using b.clone bt there is no clone function in b object i can simply create a new object bt i want to return book object from the existing object bt with original properties..