public class DragDropExamplePage extends WebPage
{
public DragDropExamplePage()
{
WebMarkupContainer product1 = new WebMarkupContainer("product1");
product1.add(new DraggableBehavior());
WebMarkupContainer product2 = new WebMarkupContainer("product2");
product2.add(new DraggableBehavior());
List<String> objects = new ArrayList<String>();
objects.add("item1");
objects.add("item3");
objects.add("item2");