public ListIterator(LinkList list) {
ourList = list;
reset();
}
// start at 'first' public void reset() {
current = ourList.getFirst();
previous = null;
}
public boolean atEnd() { return (current.next == null);
}
// go to next link public void nextLink() {
previous = current;
current = current.next;
}
public Link getCurrent() { return current;
}
public void insertAfter(long dd) {
Link newLink = new Link(dd);
if (ourList.isEmpty()) {
ourList.setFirst(newLink);
current = newLink;
} else // not empty
{
newLink.next = current.next;
current.next = newLink;
nextLink(); // point to new link
}
}
public void insertBefore(long data) {
Link newLink = new Link(data); if (previous == null) {
newLink.next = ourList.getFirst();
ourList.setFirst(newLink);
reset();
}// not beginning else {
newLink.next = previous.next;
previous.next = newLink;
current = newLink;
}
}
// delete item at current public long deleteCurrent() { long value = current.dData;
// beginning of list if (previous == null) {
ourList.setFirst(current.next);
reset();
}// not beginning else {
previous.next = current.next; if (atEnd())
reset(); else
current = current.next;
} return value;
}
public static void main(String[] args) throws IOException {
LinkList theList = new LinkList();
ListIterator iter1 = theList.getIterator(); long value;
