JGraphTisafreeJavaclasslibrarythatprovidesmathematicalgraph-theoryobjectsandalgorithms.JGraphTsupportsarichgalleryofgraphsandisdesignedtobepowerful,extensible,andeasytouse.Packagesorg.jgrapht：Thefront-endAPI'sinterfacesandclasses,includingGraph,DirectedGraphandUndirectedGraph.org.jgr