Traverse Arraylist using ListIterator

Note: List iterator has the capability to traverse the given list in both forward direction as well as backward direction.

For forward direction traversal it has got two method hasNext() & next()

For backward direction travrsal it has got two method hasPrevious() & previous()

Look at their usage in below code snippet.

package javaRadarArrayList;

import java.util.ArrayList;

import java.util.ListIterator;

public class ListItrTraversal {

      public static void main(String[] args) {

            //create Array List

            ArrayList<String> javaRadarList = new ArrayList<String>();

            //Add elements to ArrayList

            javaRadarList.add("Java");

            javaRadarList.add("Jquery");

            javaRadarList.add("Spring");

            javaRadarList.add("Hibernate");

            javaRadarList.add("EJB");

            //creating list iterator to traverse over javaRadarList

            ListIterator<String> listIterator = javaRadarList.listIterator();

            System.out.println("Traversal in forward direction");

            while(listIterator.hasNext()){

                  System.out.println(listIterator.next());

            }

           

            System.out.println("Traversal in backward direction");

            while(listIterator.hasPrevious()){

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

            }

      }

}

OUTPUT:

Traversal in forward direction

Java

Jquery

Spring

Hibernate

EJB

Traversal in backward direction

EJB

Hibernate

Spring

Jquery

Java