Program: 46003
Project: 46003
Buggy source:
/** 
 * Constructor 
 */
public CellPropertiesJFrame(){
  factoryList=new LinkedList();
  stateUpdates=new StateUpdates();
  initComponents();
  listModel=new DefaultListModel();
  capabilityList.setModel(listModel);
  capabilityList.addListSelectionListener(new CapabilityListSelectionListener());
  basicPropertiesFactory=new BasicJPanel();
  basicPropertiesFactory.setCellPropertiesEditor(this);
  positionPropertiesFactory=new PositionJPanel();
  positionPropertiesFactory.setCellPropertiesEditor(this);
  treeRoot=new DefaultMutableTreeNode("String_Node_Str");
  cellNodes=new HashMap();
  ((DefaultTreeModel)cellHierarchyTree.getModel()).setRoot(treeRoot);
  cellHierarchyTree.setCellRenderer(new CellTreeRenderer());
  cellListener=new CellStatusChangeListener(){
    public void cellStatusChanged(    final Cell cell,    final CellStatus status){
      SwingUtilities.invokeLater(new Runnable(){
        public void run(){
          DefaultMutableTreeNode node=cellNodes.get(cell);
          if (status == CellStatus.DISK) {
            if (node != null) {
              logger.warning("String_Node_Str" + cell.getName());
              if (selectedCell == cell) {
                dirtyPanelSet.clear();
              }
              TreeModel m=cellHierarchyTree.getModel();
              ((DefaultTreeModel)m).removeNodeFromParent(node);
              cellNodes.remove(cell);
            }
          }
 else           if (status == CellStatus.RENDERING) {
            if (node == null) {
              logger.warning("String_Node_Str" + cell.getName());
              createJTreeNode(cell);
            }
          }
        }
      }
);
    }
  }
;
  treeListener=new TreeSelectionListener(){
    public void valueChanged(    TreeSelectionEvent e){
      DefaultMutableTreeNode selectedNode=(DefaultMutableTreeNode)cellHierarchyTree.getLastSelectedPathComponent();
      if (selectedNode != null) {
        Object userObject=selectedNode.getUserObject();
        if (userObject instanceof Cell) {
          setSelectedCell((Cell)userObject);
        }
 else {
          setSelectedCell(null);
        }
      }
 else {
        setSelectedCell(null);
      }
    }
  }
;
  cellHierarchyTree.setDragEnabled(true);
  DropTarget dt=new DropTarget();
  try {
    dt.addDropTargetListener(new CellDropTargetListener());
  }
 catch (  TooManyListenersException ex) {
    Logger.getLogger(CellPropertiesJFrame.class.getName()).log(Level.SEVERE,null,ex);
  }
  cellHierarchyTree.setDropTarget(dt);
  addWindowListener(new WindowAdapter(){
    @Override public void windowClosing(    WindowEvent e){
      if (dirtyPanelSet.isEmpty() == false) {
        int result=JOptionPane.showConfirmDialog(CellPropertiesJFrame.this,"String_Node_Str","String_Node_Str",JOptionPane.YES_NO_OPTION,JOptionPane.QUESTION_MESSAGE);
        if (result == JOptionPane.YES_OPTION) {
          applyValues();
        }
      }
      for (      PropertiesFactorySPI factory : factoryList) {
        factory.close();
      }
    }
  }
);
}

Fixed version (ground truth):
/** 
 * Constructor 
 */
public CellPropertiesJFrame(){
  factoryList=new LinkedList();
  stateUpdates=new StateUpdates();
  initComponents();
  listModel=new DefaultListModel();
  capabilityList.setModel(listModel);
  capabilityList.addListSelectionListener(new CapabilityListSelectionListener());
  basicPropertiesFactory=new BasicJPanel();
  basicPropertiesFactory.setCellPropertiesEditor(this);
  positionPropertiesFactory=new PositionJPanel();
  positionPropertiesFactory.setCellPropertiesEditor(this);
  treeRoot=new DefaultMutableTreeNode("String_Node_Str");
  cellNodes=new HashMap();
  ((DefaultTreeModel)cellHierarchyTree.getModel()).setRoot(treeRoot);
  cellHierarchyTree.setCellRenderer(new CellTreeRenderer());
  cellListener=new CellStatusChangeListener(){
    public void cellStatusChanged(    final Cell cell,    final CellStatus status){
      SwingUtilities.invokeLater(new Runnable(){
        public void run(){
          DefaultMutableTreeNode node=cellNodes.get(cell);
          if (status == CellStatus.DISK) {
            if (node != null) {
              logger.warning("String_Node_Str" + cell.getName());
              if (selectedCell == cell) {
                dirtyPanelSet.clear();
              }
              TreeModel m=cellHierarchyTree.getModel();
              ((DefaultTreeModel)m).removeNodeFromParent(node);
              cellNodes.remove(cell);
            }
          }
 else           if (status == CellStatus.RENDERING) {
            if (node == null) {
              logger.warning("String_Node_Str" + cell.getName());
              createJTreeNode(cell);
            }
          }
        }
      }
);
    }
  }
;
  treeListener=new TreeSelectionListener(){
    public void valueChanged(    TreeSelectionEvent e){
      DefaultMutableTreeNode selectedNode=(DefaultMutableTreeNode)cellHierarchyTree.getLastSelectedPathComponent();
      if (selectedNode != null) {
        Object userObject=selectedNode.getUserObject();
        if (userObject instanceof Cell) {
          setSelectedCell((Cell)userObject);
        }
 else {
          setSelectedCell(null);
        }
      }
 else {
        setSelectedCell(null);
      }
    }
  }
;
  cellHierarchyTree.setDragEnabled(true);
  DropTarget dt=new DropTarget();
  try {
    dt.addDropTargetListener(new CellDropTargetListener());
  }
 catch (  TooManyListenersException ex) {
    Logger.getLogger(CellPropertiesJFrame.class.getName()).log(Level.SEVERE,null,ex);
  }
  cellHierarchyTree.setDropTarget(dt);
  addWindowListener(new WindowAdapter(){
    @Override public void windowClosing(    WindowEvent e){
      if (dirtyPanelSet.isEmpty() == false) {
        int result=JOptionPane.showConfirmDialog(CellPropertiesJFrame.this,"String_Node_Str","String_Node_Str",JOptionPane.YES_NO_OPTION,JOptionPane.QUESTION_MESSAGE);
        if (result == JOptionPane.YES_OPTION) {
          applyValues();
        }
 else {
          restoreValues();
        }
      }
      for (      PropertiesFactorySPI factory : factoryList) {
        factory.close();
      }
    }
  }
);
}