java - How to use DirectedSparseVertex() in the jung library? -

i new jung library, , trying create new vertex , following jung tutorial (here: http://jung.sourceforge.net/doc/manual.html#start). but, eclipse ide cannot recognize directedsparsevertex class or directededge class when try use it. wondering if missing import or something? here code. hope guys can help.

    import java.net.url;     import java.util.arraydeque;     import java.util.arraylist;     import java.util.linkedlist;     import java.util.priorityqueue;     import java.util.queue;      import org.jgrapht.directedgraph;     import org.jgrapht.graph.defaultedge;     import edu.uci.ics.jung.graph.directedsparsegraph;     import edu.uci.ics.jung.graph.graph;     import edu.uci.ics.jung.graph.sparsegraph;     import edu.uci.ics.jung.visualization.renderers.renderer.vertex;       public class locknodes      {         public locknodes()         {             graph original = new directedsparsegraph();             vertex v1_orig = original.addvertex(new directedsparsevertex());             vertex v2_orig = original.addvertex(new directedsparsevertex());             directededge e_orig = original.addedge(new directedsparseedge(v1, v2));              graph target = new directedsparsegraph();             vertex v1_copy = v1_orig.copy(target);             vertex v2_copy = v2_orig.copy(target);             directededge e_copy = e_orig.copy(target);         }     } 

so underlying in red: new directedsparsevertex() , directededge e_copy

the classes you're referencing (directedsparsevertex , directededge) jung 1.x; presumably using new jung 2.x classes, don't have types vertices , edges.

(note, way, new home jung, of v2.1, on github: http://jrtom.github.io/jung/)

i suggest take @ current javadoc , samples, documented here: http://jrtom.github.io/jung/javadoc/index.html

and @ tutorial (a bit out of date, based on v2): http://www.grotto-networking.com/jung/jung2-tutorial.pdf