Question

Hi I got this problem with I am not sure how to deal with… I have a Linked List which stores Objects which works fine. But now I am trying to display the content of the linked list using iterator and I understand that wont be as simple as

ListIterator<String> iterator = LibraryUser.listIterator();  


iterator = LibraryUser.listIterator();
while (iterator.hasNext())
 System.out.println(iterator.next());

because of the type… Is there way to do this ?

OH RIGHT! I need to override toString don’t i…

Answer 1

If all you know is that LibraryUser contains instances of Object (that is, you don’t know that they are String instances), you can use:

ListIterator<Object> iterator = LibraryUser.listIterator();
while (iterator.hasNext()) {
    System.out.println(String.valueOf(iterator.next()));
}

or, more simply:

for (Object item : theList) {
    System.out.println(String.valueOf(item));
}