Use Iterator to loop through ArrayList : Iterator « Collections « Java Tutorial

1. Java Tutorial
2. Collections
3. Iterator

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

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

    al.add(new Integer(1));
    al.add(new Integer(2));
    al.add(new Integer(3));
    al.add(new Integer(4));
    al.add(new Integer(5));
    al.add(new Integer(6));
    al.add(new Integer(7));
    al.add(new Integer(8));
    al.add(new Integer(9));
    al.add(new Integer(10));

    al.set(5, new Integer(66));

    for (Iterator i = al.iterator(); i.hasNext();) {
      Integer integer = (Integer) i.next();
      System.out.println(integer);
    }
  }
}