Jgraph is an easy-to-use, feature-rich and standards-compliant open source graph component available for java.

* process diagrams, workflow and bpm visualization, flowcharts, even
traffic or water flow.
* database and www visualization, networks and telecoms displays, mapping
applications and gis.
* uml diagrams, electronic circuits, vlsi, cad, financial and social
networks and data mining.
* biochemistry, ecological cycles, entity and cause-effect relationships
and organisational charts.
this package contains the documentation and the examples.