That tree is my private tree now! I know it is a pseudo tree.

src/view/MainView.java

@@ -82,7 +82,7 @@ public class MainView {
     private JButton randomGraph;
     private JLabel delayText;
     private JTextField delay;
-    public JTree pseudoTree;
+    private JTree pseudoTree;
     private LayeredGraphNode graph;
 
     private String debugInfo()