ListIterator Example

Source: (ListIteratorExample.java)

import java.util.ArrayList;
import java.util.List;
import java.util.ListIterator;
 
public class ListIteratorExample {
 
    public static void main(String[] args) {
        List<String> list = new ArrayList<String>();
 
        list.add("John");
        list.add("Ringo");
        list.add("George");
        list.add("Paul");
 
        ListIterator listIterator = list.listIterator();
 
        /*
         * hasNext() returns true if this list iterator has more elements 
         * when traversing the list in the forward direction.
         */
        while (listIterator.hasNext()) {
            /*
             * next() returns the next element in the list 
             * and advances the cursor position.
             */
            System.out.println(listIterator.next());
        }
 
        /*
         * hasPrevious() returns true if this list iterator has more elements 
         * when traversing the list in the reverse direction.
         */
        while (listIterator.hasPrevious()) {
            /*
             * previous() returns the previous element in the list  
             * and moves the cursor position backwards.
             */
            System.out.println(listIterator.previous());
        }
    }
 
}
 

Output:

$ java ListIteratorExample
John
Ringo
George
Paul
Paul
George
Ringo
John