diff --git a/src/java/org/web3d/vrml/nodes/SceneGraphTraverser.java b/src/java/org/web3d/vrml/nodes/SceneGraphTraverser.java index 94173be866932519fbbb857feeaa3c0589b2bfc5..f8140495dc71da45a5fb881c2338b4ec211ba373 100644 --- a/src/java/org/web3d/vrml/nodes/SceneGraphTraverser.java +++ b/src/java/org/web3d/vrml/nodes/SceneGraphTraverser.java @@ -39,7 +39,7 @@ public class SceneGraphTraverser { private boolean inUse; /** Temporary map during traversal for use references */ - private HashSet<VRMLNodeType> usedNodes; + private final HashSet<VRMLNodeType> usedNodes; /** The detailObs for the scene graph */ private SceneGraphTraversalDetailObserver detailObs;