import java.util.ArrayList;

import 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()) {

      System.out.println(it.previous());

    }

  }

}

​