I need in my program something like a Gantt chart, with multiple tasks per line.
One requirement is that the tasks can be rearranged, by drag and drop and ideally it also supports animation.
Can someone recommend from experience a free Java library which would make my life easier? It doesn't need to be specifically designed for creating Gantt charts, but it should be easily used to implement them.
I've looked into JFreeChart but it doesn't rise up to the task.