Here's a small Jung diagram in a NetBeans Platform application:

And the code, copied directly from the Jung 2.0 Tutorial: 

public final class JungTopComponent extends TopComponent {

    public JungTopComponent() {
        initComponents();
        setName(Bundle.CTL_JungTopComponent());
        setToolTipText(Bundle.HINT_JungTopComponent());

        setLayout(new BorderLayout());
        
        Graph sgv = getGraph(); 
        
        Layout<Integer, String> layout = new CircleLayout(sgv);
        layout.setSize(new Dimension(300, 300)); 
        
        BasicVisualizationServer<Integer, String> vv = 
                new BasicVisualizationServer<Integer, String>(layout);
        vv.setPreferredSize(new Dimension(350, 350));
        
        add(vv, BorderLayout.CENTER);

    }

    public Graph getGraph() {
        
        Graph<Integer, String> g = new SparseMultigraph<Integer, String>();
        g.addVertex((Integer) 1);
        g.addVertex((Integer) 2);
        g.addVertex((Integer) 3);
        g.addEdge("Edge-A", 1, 2); 
        g.addEdge("Edge-B", 2, 3);

        Graph<Integer, String> g2 = new SparseMultigraph<Integer, String>();
        g2.addVertex((Integer) 1);
        g2.addVertex((Integer) 2);
        g2.addVertex((Integer) 3);
        g2.addEdge("Edge-A", 1, 3);
        g2.addEdge("Edge-B", 2, 3, EdgeType.DIRECTED);
        g2.addEdge("Edge-C", 3, 2, EdgeType.DIRECTED);
        g2.addEdge("Edge-P", 2, 3);

        return g;

    }

And here's what someone who attended a NetBeans Platform training course in Poland has done with Jung and the NetBeans Platform: