IteratorDemo.java Source code

Introduction

Here is the source code for IteratorDemo.java

Source

import java.util.ArrayList;
import java.util.Iterator;
import java.util.ListIterator;

class IteratorDemo {
    public static void main(String args[]) {
        ArrayList<String> al = new ArrayList<String>();

        al.add("C");
        al.add("A");
        al.add("E");
        al.add("B");
        al.add("D");
        al.add("F");

        Iterator<String> itr = al.iterator();
        while (itr.hasNext()) {
            String element = itr.next();
            System.out.print(element + " ");
        }

        ListIterator<String> litr = al.listIterator();
        while (litr.hasNext()) {
            String element = litr.next();
            litr.set(element + "+");
        }

        itr = al.iterator();
        while (itr.hasNext()) {
            String element = itr.next();
            System.out.print(element + " ");
        }

        while (litr.hasPrevious()) {
            String element = litr.previous();
            System.out.print(element + " ");
        }
    }
}