Workflow UI in Java

Does anyone know of a Java (Swing) based UI framework for building a Workflow application?

-Users are given a set of activities -They can drag and drop these activities -Link activities 开发者_JS百科to each other (workflow steps)

One of the most widely used is JGraph.

While I like, the Netbeans Visual Library more (and Geerjan's articles about it), I saw JGraph integrated in far more products, and the manual is also quite good.

Take a look at Netbeans Visual Library. Since it is a library - it can be used even if Netbeans in not the IDE you're using.