Program: 10161
Project: 10161
Buggy source:
public StartGUI(File file){
  this.setTitle("String_Node_Str");
  this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  this.setSize(800,600);
  Dimension screenSize=Toolkit.getDefaultToolkit().getScreenSize();
  Dimension size=getSize();
  screenSize.height=screenSize.height / 2;
  screenSize.width=screenSize.width / 2;
  size.height=size.height / 2;
  size.width=size.width / 2;
  int y=screenSize.height - size.height;
  int x=screenSize.width - size.width;
  setLocation(x,y);
  if (this.getClass().getResource("String_Node_Str") != null)   setIconImage(java.awt.Toolkit.getDefaultToolkit().getImage(this.getClass().getResource("String_Node_Str")));
  List<Class<? extends Component>> ignoredKnowledgeSources=new LinkedList<Class<? extends Component>>();
  ignoredKnowledgeSources.add(OWLAPIOntology.class);
  panels[0]=new ComponentPanel(config,this,KnowledgeSource.class,OWLFile.class,ignoredKnowledgeSources);
  panels[1]=new ComponentPanel(config,this,ReasonerComponent.class,FastInstanceChecker.class);
  panels[2]=new ComponentPanel(config,this,LearningProblem.class,PosNegDefinitionLP.class);
  panels[3]=new ComponentPanel(config,this,LearningAlgorithm.class,ExampleBasedROLComponent.class);
  runPanel=new RunPanel(config,this);
  tabPane.addTab("String_Node_Str",panels[0]);
  tabPane.addTab("String_Node_Str",panels[1]);
  tabPane.addTab("String_Node_Str",panels[2]);
  tabPane.addTab("String_Node_Str",panels[3]);
  tabPane.addTab("String_Node_Str",runPanel);
  setJMenuBar(menuBar);
  menuBar.add(menuFile);
  menuFile.add(openItem);
  openItem.addActionListener(this);
  menuFile.add(saveItem);
  saveItem.addActionListener(this);
  menuFile.add(exitItem);
  exitItem.addActionListener(this);
  menuBar.add(menuHelp);
  menuHelp.add(tutorialItem);
  tutorialItem.addActionListener(this);
  menuHelp.add(aboutItem);
  aboutItem.addActionListener(this);
  add(tabPane,BorderLayout.CENTER);
  add(statusPanel,BorderLayout.SOUTH);
  setVisible(true);
  updateTabs();
  tabPane.addChangeListener(new ChangeListener(){
    public void stateChanged(    ChangeEvent evt){
      if (evt.getSource().equals(tabPane)) {
        int index=tabPane.getSelectedIndex();
        if (index != 0 && config.tabNeedsInit(index - 1)) {
          for (int i=0; i < index; i++) {
            if (config.tabNeedsInit(i)) {
              config.init(i);
            }
          }
        }
        updateTabs();
switch (index) {
case 0:
          panels[0].panelActivated();
        break;
case 1:
      panels[1].panelActivated();
    break;
case 2:
  panels[2].panelActivated();
break;
case 3:
panels[3].panelActivated();
break;
}
statusPanel.setTabInitMessage();
}
}
}
);
if (file != null) {
configLoad.openFile(file);
configLoad.startParser();
}
}

Fixed version (ground truth):
public StartGUI(File file){
  this.setTitle("String_Node_Str");
  this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  this.setSize(800,600);
  Dimension screenSize=Toolkit.getDefaultToolkit().getScreenSize();
  Dimension size=getSize();
  screenSize.height=screenSize.height / 2;
  screenSize.width=screenSize.width / 2;
  size.height=size.height / 2;
  size.width=size.width / 2;
  int y=screenSize.height - size.height;
  int x=screenSize.width - size.width;
  setLocation(x,y);
  if (this.getClass().getResource("String_Node_Str") != null)   setIconImage(java.awt.Toolkit.getDefaultToolkit().getImage(this.getClass().getResource("String_Node_Str")));
  List<Class<? extends Component>> ignoredKnowledgeSources=new LinkedList<Class<? extends Component>>();
  ignoredKnowledgeSources.add(OWLAPIOntology.class);
  panels[0]=new ComponentPanel(config,this,KnowledgeSource.class,OWLFile.class,ignoredKnowledgeSources);
  panels[1]=new ComponentPanel(config,this,ReasonerComponent.class,FastInstanceChecker.class);
  panels[2]=new ComponentPanel(config,this,LearningProblem.class,PosNegDefinitionLP.class);
  panels[3]=new ComponentPanel(config,this,LearningAlgorithm.class,ExampleBasedROLComponent.class);
  runPanel=new RunPanel(config,this);
  tabPane.addTab("String_Node_Str",panels[0]);
  tabPane.addTab("String_Node_Str",panels[1]);
  tabPane.addTab("String_Node_Str",panels[2]);
  tabPane.addTab("String_Node_Str",panels[3]);
  tabPane.addTab("String_Node_Str",runPanel);
  setJMenuBar(menuBar);
  menuBar.add(menuFile);
  menuFile.add(openItem);
  openItem.addActionListener(this);
  menuFile.add(saveItem);
  saveItem.addActionListener(this);
  menuFile.add(exitItem);
  exitItem.addActionListener(this);
  menuBar.add(menuHelp);
  menuHelp.add(tutorialItem);
  tutorialItem.addActionListener(this);
  menuHelp.add(aboutItem);
  aboutItem.addActionListener(this);
  add(tabPane,BorderLayout.CENTER);
  add(statusPanel,BorderLayout.SOUTH);
  setVisible(true);
  updateTabs();
  tabPane.addChangeListener(new ChangeListener(){
    public void stateChanged(    ChangeEvent evt){
      if (evt.getSource().equals(tabPane)) {
        int index=tabPane.getSelectedIndex();
        List<Integer> componentsToInit=new LinkedList<Integer>();
        if (index != 0 && config.tabNeedsInit(index - 1)) {
          for (int i=0; i < index; i++) {
            if (config.tabNeedsInit(i)) {
              componentsToInit.add(i);
            }
          }
        }
        config.init(componentsToInit);
        updateTabs();
switch (index) {
case 0:
          panels[0].panelActivated();
        break;
case 1:
      panels[1].panelActivated();
    break;
case 2:
  panels[2].panelActivated();
break;
case 3:
panels[3].panelActivated();
break;
}
statusPanel.setTabInitMessage();
}
}
}
);
if (file != null) {
configLoad.openFile(file);
configLoad.startParser();
}
}