// All Rights Reserved. Copyright (C) Kazuo Misue (2010)

import edu.uci.ics.jung.graph.Graph;
import edu.uci.ics.jung.graph.UndirectedSparseGraph;

public class Sample2a {

    public static void main(String[] args) {
        Graph<MyNode,MyEdge> graph = new UndirectedSparseGraph<MyNode,MyEdge>();
        MyNode n1 = new MyNode("n1");
        MyNode n2 = new MyNode("n2");
        MyNode n3 = new MyNode("n3");
        graph.addVertex(n1);
        graph.addVertex(n2);
        graph.addVertex(n3);
        graph.addEdge(new MyEdge("e1"), n1, n2);
        graph.addEdge(new MyEdge("e2"), n2, n3);
        System.out.println("Graph G = " + graph.toString());
    }

}