Java Reference
In-Depth Information
public class ListIteratorTest {
public static void main(String[] args) {
List<String> list = new ArrayList<>();
list.add("John");
list.add("Richard");
list.add("Donna");
list.add("Ken");
System.out.println("List: " + list);
// Get the list iterator
ListIterator<String> iterator = list.listIterator();
System.out.println();
System.out.println("List Iterator in forward direction:");
while (iterator.hasNext()) {
int index = iterator.nextIndex();
String element = iterator.next();
System.out.println("Index=" + index + ", Element=" + element);
}
System.out.println();
System.out.println("List Iterator in backward direction:");
// Reuse the iterator to iterate from the end to the beginning
while (iterator.hasPrevious()) {
int index = iterator.previousIndex();
String element = iterator.previous();
System.out.println("Index=" + index + ", Element=" + element);
}
}
}
List: [John, Richard, Donna, Ken]
List Iterator in forward direction:
Index=0, Element=John
Index=1, Element=Richard
Index=2, Element=Donna
Index=3, Element=Ken
List Iterator in backward direction:
Index=3, Element=Ken
Index=2, Element=Donna
Index=1, Element=Richard
Index=0, Element=John
