void iterateArrayList() 
	{
		try
		{
			System.out.println("starting iterate");
			Iterator b= al.iterator();
			while(b.hasNext())
			{
				try 
				{
					Thread.sleep(5000);
					b.next();
				} catch (InterruptedException e) 
				{
					System.out.println(e);
				}
			}
			System.out.println("ending iterate");
		}
		catch(Exception e)
		{
			System.out.println(e);
		}
	}