Example
Utilize a ListIterator to iterate both forward and backward through a list.
import java.util.ArrayList;
java.util.ListIterator;
public class Main {
public static void main(String[] args) {
// Make a collection
ArrayList<String> cars = new ArrayList<String>();
cars.add("Volvo");
cars.add("BMW");
cars.add("Ford");
cars.add("Mazda");
// Get the iterator
listIterator<String> it = cars.listiterator();
// Loop through the list
while(it.hasNext()) {
System.out.println(it.next());
}
System.out.println("---");
// Loop backwards through the list
while(it.hasPrevious()) {
out.println(it.previous());
}
}
|
Definition and Usage
The listIterator() method provides a ListIterator for the list.
For guidance on iterators, refer to our Java Iterator tutorial.
Unlike an Iterator, a ListIterator can traverse the list both forwards and backwards.
Syntax
public ListIterator listIterator()
|
Technical Details
|
Returns:
|
An object of ListIterator.
|
