Program: 81637
Project: 81637
Buggy source:
public void actionPerformed(ActionEvent e){
  if (this_.getSelectedIndex() == 0) {
    JOptionPane.showMessageDialog(this_,"String_Node_Str");
  }
 else {
    String name=this_.getSelectedValue().toString();
    if (name.indexOf("String_Node_Str") != -1) {
      name=name.substring(name.indexOf("String_Node_Str") + 1,name.length()).trim();
    }
    int r=JOptionPane.showConfirmDialog(this_,"String_Node_Str" + name + "String_Node_Str");
    if (r == JOptionPane.OK_OPTION) {
      if (mainWindow != null && name.equals(ComponentConst.groupName)) {
        mainWindow.dispose();
      }
      File file=new File(ComponentConst.ROOT_DATA_PATH + "String_Node_Str" + name);
      if (file.exists()) {
        FileUtil.deleteFile(file);
      }
      File dataFile=new File(ComponentConst.ROOT_DATA_PATH);
      if (!dataFile.exists()) {
        dataFile.mkdirs();
        if (window != null) {
          window.dispose();
        }
        ComponentConst.groupName="String_Node_Str";
        ComponentConst.changeDataPath("String_Node_Str");
        ComponentConst.changeDataXmlPath();
        SettingDom4jDbTemplate.updateDom();
        TaskDom4jDbTemplate.updateDom();
        PictureDom4jDbTemplate.updateDom();
        new InitWindow();
      }
 else {
        File[] files=dataFile.listFiles();
        List<File> groups=new ArrayList<File>();
        for (        File file2 : files) {
          if (file2.isDirectory()) {
            groups.add(file2);
          }
        }
        if (groups.size() > 0) {
          this_.setModel(new GroupListModel(groups));
          this_.updateUI();
        }
 else {
          if (window != null) {
            window.dispose();
          }
          ComponentConst.groupName="String_Node_Str";
          ComponentConst.changeDataPath("String_Node_Str");
          ComponentConst.changeDataXmlPath();
          SettingDom4jDbTemplate.updateDom();
          TaskDom4jDbTemplate.updateDom();
          PictureDom4jDbTemplate.updateDom();
          new InitWindow();
        }
      }
    }
  }
}

Fixed version (ground truth):
public void actionPerformed(ActionEvent e){
  if (this_.getSelectedIndex() == 0) {
    JOptionPane.showMessageDialog(this_,"String_Node_Str");
  }
 else {
    String name=this_.getSelectedValue().toString();
    if (name.indexOf("String_Node_Str") != -1) {
      name=name.substring(name.indexOf("String_Node_Str") + 1,name.length()).trim();
    }
    int r=JOptionPane.showConfirmDialog(this_,"String_Node_Str" + name + "String_Node_Str");
    if (r == JOptionPane.OK_OPTION) {
      if (mainWindow != null && name.equals(ComponentConst.groupName)) {
        mainWindow.saveTaskGroupData();
        mainWindow.dispose();
      }
      File file=new File(ComponentConst.ROOT_DATA_PATH + "String_Node_Str" + name);
      if (file.exists()) {
        FileUtil.deleteFile(file);
      }
      File dataFile=new File(ComponentConst.ROOT_DATA_PATH);
      if (!dataFile.exists()) {
        dataFile.mkdirs();
        if (window != null) {
          window.dispose();
        }
        ComponentConst.groupName="String_Node_Str";
        ComponentConst.changeDataPath("String_Node_Str");
        ComponentConst.changeDataXmlPath();
        SettingDom4jDbTemplate.updateDom();
        TaskDom4jDbTemplate.updateDom();
        PictureDom4jDbTemplate.updateDom();
        SwingUtilities.invokeLater(new Runnable(){
          public void run(){
            new InitWindow();
          }
        }
);
      }
 else {
        File[] files=dataFile.listFiles();
        List<File> groups=new ArrayList<File>();
        for (        File file2 : files) {
          if (file2.isDirectory()) {
            groups.add(file2);
          }
        }
        if (groups.size() > 0) {
          this_.setModel(new GroupListModel(groups));
          this_.updateUI();
        }
 else {
          if (window != null) {
            window.dispose();
          }
          ComponentConst.groupName="String_Node_Str";
          ComponentConst.changeDataPath("String_Node_Str");
          ComponentConst.changeDataXmlPath();
          SettingDom4jDbTemplate.updateDom();
          TaskDom4jDbTemplate.updateDom();
          PictureDom4jDbTemplate.updateDom();
          SwingUtilities.invokeLater(new Runnable(){
            public void run(){
              new InitWindow();
            }
          }
);
        }
      }
    }
  }
}