Program: 10120
Project: 10120
Buggy source:
/** 
 * The constructor for the DL-Learner tab in the class description editor.
 * @param current OWLFrame
 * @param label String
 */
public DLLearnerView(OWLFrame<OWLClass> current,String label){
  classSelectorPanel=new OWLClassSelectorPanel(editorKit);
  classSelectorPanel.firePropertyChange("String_Node_Str",false,true);
  URL iconUrl=this.getClass().getResource("String_Node_Str");
  icon=new ImageIcon(iconUrl);
  URL toggledIconUrl=this.getClass().getResource("String_Node_Str");
  toggledIcon=new ImageIcon(toggledIconUrl);
  model=new DLLearnerModel(editorKit,current,label,this);
  sugPanel=new SuggestClassPanel();
  action=new ActionHandler(this.action,model,this,label,editorKit);
  adv=new JLabel("String_Node_Str");
  advanced=new JToggleButton(icon);
  advanced.setVisible(true);
  run=new JButton("String_Node_Str" + label);
  accept=new JButton("String_Node_Str");
  addButtonPanel=new JPanel(new BorderLayout());
  sugPanel.addSuggestPanelMouseListener(action);
  errorMessage=new JTextArea();
  errorMessage.setEditable(false);
  hint=new JTextArea();
  hint.setEditable(false);
  hint.setText("String_Node_Str");
  learner=new JPanel();
  advanced.setSize(20,20);
  learner.setLayout(null);
  learner.setPreferredSize(new Dimension(600,520));
  accept.setPreferredSize(new Dimension(290,50));
  advanced.setName("String_Node_Str");
  posPanel=new PosAndNegSelectPanel(model,action);
  addAcceptButtonListener(this.action);
  addRunButtonListener(this.action);
  addAdvancedButtonListener(this.action);
}

Fixed version (ground truth):
/** 
 * The constructor for the DL-Learner tab in the class description editor.
 * @param current OWLFrame
 * @param label String
 * @param dlLearner OWLClassDescriptionEditorWithDLLearnerTab
 */
public DLLearnerView(OWLFrame<OWLClass> current,String label,OWLClassDescriptionEditorWithDLLearnerTab dlLearner){
  classSelectorPanel=new OWLClassSelectorPanel(editorKit);
  mainWindow=dlLearner;
  classSelectorPanel.firePropertyChange("String_Node_Str",false,true);
  URL iconUrl=this.getClass().getResource("String_Node_Str");
  icon=new ImageIcon(iconUrl);
  URL toggledIconUrl=this.getClass().getResource("String_Node_Str");
  toggledIcon=new ImageIcon(toggledIconUrl);
  model=new DLLearnerModel(editorKit,current,label,this);
  sugPanel=new SuggestClassPanel();
  action=new ActionHandler(this.action,model,this,label,editorKit);
  adv=new JLabel("String_Node_Str");
  advanced=new JToggleButton(icon);
  advanced.setVisible(true);
  run=new JButton("String_Node_Str" + label);
  accept=new JButton("String_Node_Str");
  addButtonPanel=new JPanel(new BorderLayout());
  sugPanel.addSuggestPanelMouseListener(action);
  errorMessage=new JTextArea();
  errorMessage.setEditable(false);
  hint=new JTextArea();
  hint.setEditable(false);
  hint.setText("String_Node_Str");
  learner=new JPanel();
  advanced.setSize(20,20);
  learner.setLayout(null);
  learner.setPreferredSize(new Dimension(600,520));
  accept.setPreferredSize(new Dimension(290,50));
  advanced.setName("String_Node_Str");
  posPanel=new PosAndNegSelectPanel(model,action);
  addAcceptButtonListener(this.action);
  addRunButtonListener(this.action);
  addAdvancedButtonListener(this.action);
}