Program: 72784
Project: 72784
Buggy source:
private JComponent _getModeTransitionPanel(){
  JPanel modeTransitionTablePanel=new JPanel(new BorderLayout());
  final ModeTransitionTableModel tableModel=new ModeTransitionTableModel(_model);
  final JTable table=new JTable(tableModel);
  table.setGridColor(Color.black);
  JButton addModeButton=new JButton("String_Node_Str");
  addModeButton.addActionListener(new ActionListener(){
    public void actionPerformed(    ActionEvent e){
      Vector<String> vector=new Vector<String>();
      vector.add("String_Node_Str");
      vector.add("String_Node_Str");
      vector.add("String_Node_Str");
      tableModel.addRow(vector);
    }
  }
);
  JButton saveButton=new JButton("String_Node_Str");
  saveButton.addActionListener(new ActionListener(){
    public void actionPerformed(    ActionEvent e){
      try {
        tableModel.saveModel();
      }
 catch (      IllegalActionException e1) {
        MessageHandler.error(e1.getMessage(),e1);
      }
catch (      NameDuplicationException e1) {
        MessageHandler.error(e1.getMessage(),e1);
      }
    }
  }
);
  modeTransitionTablePanel.add(table.getTableHeader(),BorderLayout.PAGE_START);
  modeTransitionTablePanel.add(table,BorderLayout.CENTER);
  JPanel buttons=new JPanel();
  buttons.add(addModeButton);
  buttons.add(saveButton);
  modeTransitionTablePanel.add(buttons,BorderLayout.SOUTH);
  return modeTransitionTablePanel;
}

Fixed version (ground truth):
private JComponent _getModeTransitionPanel(){
  JPanel modeTransitionTablePanel=new JPanel(new BorderLayout());
  final ModeTransitionTableModel tableModel=new ModeTransitionTableModel(_model);
  final JTable table=new JTable(tableModel);
  table.setGridColor(Color.black);
  JButton addRowButton=new JButton("String_Node_Str");
  addRowButton.addActionListener(new ActionListener(){
    public void actionPerformed(    ActionEvent e){
      Vector<String> vector=new Vector<String>();
      vector.add("String_Node_Str");
      vector.add("String_Node_Str");
      vector.add("String_Node_Str");
      tableModel.addRow(vector);
    }
  }
);
  JButton saveButton=new JButton("String_Node_Str");
  saveButton.addActionListener(new ActionListener(){
    public void actionPerformed(    ActionEvent e){
      try {
        tableModel.saveModel();
      }
 catch (      IllegalActionException e1) {
        MessageHandler.error(e1.getMessage(),e1);
      }
catch (      NameDuplicationException e1) {
        MessageHandler.error(e1.getMessage(),e1);
      }
    }
  }
);
  final JComboBox box=new JComboBox();
  box.setPrototypeDisplayValue("String_Node_Str");
  box.setModel(new ComboBoxModel(){
    List<String> _states;
    State _initialState;
    @Override public void addListDataListener(    ListDataListener arg0){
    }
    @Override public Object getElementAt(    int arg0){
      if (_states == null) {
        _initializeStates();
      }
      if (arg0 >= 0 && _states.size() > arg0) {
        System.out.println(arg0);
        return _states.get(arg0);
      }
 else {
        return "String_Node_Str";
      }
    }
    private void _initializeStates(){
      _states=new ArrayList<String>();
      for (      Object o : _model.entityList()) {
        if (o instanceof State) {
          State state=(State)o;
          _states.add(state.getName());
          try {
            if (((BooleanToken)state.isInitialState.getToken()).booleanValue()) {
              _initialState=state;
            }
          }
 catch (          IllegalActionException e) {
            MessageHandler.error("String_Node_Str",e);
          }
        }
      }
    }
    @Override public int getSize(){
      if (_states == null) {
        _initializeStates();
      }
      return _states.size();
    }
    @Override public void removeListDataListener(    ListDataListener arg0){
    }
    @Override public Object getSelectedItem(){
      if (_states == null) {
        _initializeStates();
      }
      if (_initialState != null) {
        return _initialState.getName();
      }
 else {
        return null;
      }
    }
    @Override public void setSelectedItem(    Object arg0){
      if (_states == null) {
        _initializeStates();
      }
      String stateName=(String)arg0;
      State state=(State)_model.getEntity(stateName);
      try {
        _initialState=state;
        state.isInitialState.setToken("String_Node_Str");
      }
 catch (      IllegalActionException e1) {
        MessageHandler.error("String_Node_Str",e1);
      }
    }
  }
);
  box.addActionListener(new ActionListener(){
    @Override public void actionPerformed(    ActionEvent e){
      if (box.getSelectedItem() instanceof State) {
        State state=(State)box.getSelectedItem();
        try {
          state.isInitialState.setToken("String_Node_Str");
        }
 catch (        IllegalActionException e1) {
          MessageHandler.error("String_Node_Str",e1);
        }
      }
    }
  }
);
  modeTransitionTablePanel.add(table.getTableHeader(),BorderLayout.PAGE_START);
  modeTransitionTablePanel.add(table,BorderLayout.CENTER);
  JPanel buttons=new JPanel();
  buttons.add(addRowButton);
  buttons.add(new JLabel("String_Node_Str"));
  buttons.add(box);
  buttons.add(saveButton);
  modeTransitionTablePanel.add(buttons,BorderLayout.SOUTH);
  return modeTransitionTablePanel;
}