Iterate through a Collection using Java Iterator Example

       public class JavaIteratorExample
   {
     public static void main(String[] args)
     {
       //create an ArrayList object
       ArrayList aList = new ArrayList();
      
       //populate ArrayList object
       aList.add("1");
       aList.add("2");
       aList.add("3");
       aList.add("4");
       aList.add("5");
      
       /*
       Get Iterator object by invoking iterator method of collection.
       Iterator provides hasNext() method which returns true if has more
       elements. next() method returns the element in iteration.
       */
       Iterator itr = aList.iterator();
      
       //iterate through the ArrayList values using Iterator's hasNext and next methods
       while(itr.hasNext())
         System.out.println(itr.next());
      
       /*
       Please note that next method may throw a java.util.NoSuchElementException
       if iteration has no more elements.
       */
      
     }
   }