ListIterator with an example


ListIterator allows the programmer to traverse the list in either direction, modify the list during iteration, and obtain the iterator’s current position in the list. A ListIterator has no current element; its cursor position always lies between the element that would be returned by a call to previous() and the element that would be returned by a call to next().

Example:
 public class sample {
 
  public static void main(String[] args) {
    //create an object of ArrayList
    ArrayList aList = new ArrayList();
 
    //Add elements to ArrayList object
    aList.add("1");
    aList.add("2");
    aList.add("3");
    aList.add("4");
    aList.add("5");
 
    //Get an object of ListIterator using listIterator() method
    ListIterator listIterator = aList.listIterator();
 
      
    System.out.println(" forward direction using ListIterator");
    while(listIterator.hasNext())
      System.out.println(listIterator.next());
 
   
    System.out.println("reverse direction using ListIterator");
    while(listIterator.hasPrevious())
      System.out.println(listIterator.previous());
   }
}
 
try the above code and get back to me :)

5 thoughts on “ListIterator with an example

  1. ShekarSana February 16, 2013 / 10:19 am

    Hi Mallik… Nice Explanation………….
    I have one doubt while iterating the list i am trying to add an element I am geeting
    Exception in thread “main” java.util.ConcurrentModificationException
    at java.util.AbstractList$Itr.checkForComodification(Unknown Source)
    at java.util.AbstractList$ListItr.previous(Unknown Source)
    at com.sana.collections.ListEx.main(ListEx.java:37)

    But able to set the Value ….

  2. Mallik February 23, 2013 / 7:36 am

    Hi shekar,

    Thanks for your comments.

    Can you share the your program ?.. so that I can provide the solution

  3. Self Managed Trade Mark April 21, 2014 / 10:05 am

    Hi! Would you mind if I share your blog with my facebook
    group? There’s a lot of folks that I think would really enjoy your content.
    Please let me know. Many thanks

    • Mallik April 21, 2014 / 10:08 am

      I don’t mind pls!!!

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