Unlike simple GUI components, JTree objects contain substructure, which makes implementing drag and drop ... DnDJTree.java in the source code zip in Resources for a more production-worthy example.

A drag and drop with images component, both the drag and drop spots can have images. There can also be dummy answers and works with multiple correct items. This component also has bounce back option ...

JQuery UI, for example, came with dozens of components, and the drag-and-drop component had a complicated ... software development platforms including Java and .NET and programming languages ...