Fri Jun 16 19:39:53 GMT+02:00 2000java.lang.IllegalArgumentException: A node selection cannot contain nodes (jlblCurrentTime [JLabel]) not underneath the root (ClockFrame [JFrame]).
java.lang.IllegalArgumentException: A node selection cannot contain nodes (jlblCurrentTime [JLabel]) not underneath the root (ClockFrame [JFrame]).
        at org.openide.explorer.ExplorerManager.setSelectedNodes(ExplorerManager.java:138)
        at org.openide.explorer.view.BeanTreeView.selectionChanged(BeanTreeView.java:88)
        at org.openide.explorer.view.TreeView.callSelectionChanged(TreeView.java:512)
        at org.openide.explorer.view.TreeView$TreePropertyListener.valueChanged(TreeView.java:614)
        at javax.swing.tree.DefaultTreeSelectionModel.fireValueChanged(DefaultTreeSelectionModel.java:612)
        at javax.swing.tree.DefaultTreeSelectionModel.notifyPathChange(DefaultTreeSelectionModel.java:1006)
        at javax.swing.tree.DefaultTreeSelectionModel.removeSelectionPaths(DefaultTreeSelectionModel.java:498)
        at javax.swing.JTree.removeDescendantSelectedPaths(JTree.java:2879)
        at javax.swing.JTree.removeDescendantSelectedPaths(JTree.java:2929)
        at javax.swing.JTree$TreeModelHandler.treeNodesRemoved(JTree.java:3012)
        at javax.swing.tree.DefaultTreeModel.fireTreeNodesRemoved(DefaultTreeModel.java:492)
        at javax.swing.tree.DefaultTreeModel.nodesWereRemoved(DefaultTreeModel.java:303)
        at org.openide.explorer.view.NodeTreeModel$Listener.removed(NodeTreeModel.java:149)
        at org.openide.explorer.view.VisualizerChildren.removed(VisualizerChildren.java:111)
        at org.openide.explorer.view.VisualizerEvent$Removed.run(VisualizerEvent.java:111)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:154)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:317)
        at java.awt.EventDispatchThread.pumpOneEvent(EventDispatchThread.java:103)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:84)