sample code to demonstrate Iterator

package collection;

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

public class IteratorDemo {
    public static void main(String arg[])
    {
    ArrayList l=new ArrayList();
    for(int i=0;i<10;i++)
    {
    l.add(new Integer(i));
    }
    System.out.println(l);   //  0,1,2,3,……9
    Iterator itr=l.iterator();
    while(itr.hasNext())
    {
    Integer i=(Integer)itr.next();
    if(i.intValue() % 2==0)
    {
    System.out.println(i);
    }
    else
    {
    itr.remove();
    }
    }
    
    }

}


output:
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
0
2
4
6
8