There is no such matching class in jbpm4. Maybe org.jbpm.pvm.internal.model.Activity (or org.jbpm.pvm.internal.model.ActivityImpl) and org.jbpm.api.activity.ActivityBehaviour combination can be thought of as a closer match, but no way they can be called the same. I believe Node is typically for graph based process models. Activity is more generic. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4265394#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...