Thread: Im trying to print all the Books in Book Class with the Iterator and while statement

Trying to find why this code wont compile. it returns error code "cannot find symbol- variable book"

 public void ListBooksIterator()
    {
        Iterator<String> it = book.iterator();
        while(it.hasNext()) 
        {
            System.out.println(it.next());
        }
    }

Trying to print all the Books in the book Class.cheers

"cannot find symbol- variable book"

The error message means the compiler can not see the declaration of the symbol, which the compiler believes to be a variable name based on it's use. Where did you declare book and why is this method not within scope?
Without the rest of the class code not much more advice to offer.