Program: 3761
Project: 3761
Buggy source:
@Override public void keyPressed(KeyEvent e){
  if (e.getKeyCode() == KeyEvent.VK_DELETE) {
    List<LocalFileItem> selectedItems=new ArrayList<LocalFileItem>(selectedLocalFileItems.get());
    String title=null;
    String message=null;
    String deleteText=null;
    String removeText=I18n.tr("String_Node_Str");
    String cancelText=I18n.tr("String_Node_Str");
    if (OSUtils.isWindows() && OSUtils.supportsTrash()) {
      title=I18n.trn("String_Node_Str","String_Node_Str",selectedItems.size());
      message=I18n.trn("String_Node_Str","String_Node_Str",selectedItems.size());
      deleteText=I18n.tr("String_Node_Str");
    }
 else     if (OSUtils.isMacOSX() && OSUtils.supportsTrash()) {
      title=I18n.trn("String_Node_Str","String_Node_Str",selectedItems.size());
      message=I18n.trn("String_Node_Str","String_Node_Str",selectedItems.size());
      deleteText=I18n.tr("String_Node_Str");
    }
 else {
      title=I18n.trn("String_Node_Str","String_Node_Str",selectedItems.size());
      message=I18n.trn("String_Node_Str","String_Node_Str",selectedItems.size());
      deleteText=I18n.tr("String_Node_Str");
    }
    Object[] options=new Object[]{removeText,deleteText,cancelText};
    int confirmation=FocusJOptionPane.showOptionDialog(null,message,title,JOptionPane.OK_CANCEL_OPTION,JOptionPane.QUESTION_MESSAGE,null,options,cancelText);
    if (confirmation < 0 || options[confirmation] == cancelText) {
      return;
    }
    if (options[confirmation] == deleteText) {
      DeleteAction.deleteSelectedItems(libraryManager,selectedItems);
    }
 else     if (options[confirmation] == removeText) {
      RemoveFromLibraryAction.removeFromLibrary(libraryManager,selectedItems);
    }
  }
}

Fixed version (ground truth):
@Override public void keyPressed(KeyEvent e){
  if (e.getKeyCode() == KeyEvent.VK_DELETE) {
    List<LocalFileItem> selectedItems=new ArrayList<LocalFileItem>(selectedLocalFileItems.get());
    String title=null;
    String message=null;
    String deleteText=null;
    String removeText=I18n.tr("String_Node_Str");
    String cancelText=I18n.tr("String_Node_Str");
    if (OSUtils.isWindows() && OSUtils.supportsTrash()) {
      title=I18n.trn("String_Node_Str","String_Node_Str",selectedItems.size());
      message=I18n.trn("String_Node_Str","String_Node_Str",selectedItems.size());
      deleteText=I18n.tr("String_Node_Str");
    }
 else     if (OSUtils.isMacOSX() && OSUtils.supportsTrash()) {
      title=I18n.trn("String_Node_Str","String_Node_Str",selectedItems.size());
      message=I18n.trn("String_Node_Str","String_Node_Str",selectedItems.size());
      deleteText=I18n.tr("String_Node_Str");
    }
 else {
      title=I18n.trn("String_Node_Str","String_Node_Str",selectedItems.size());
      message=I18n.trn("String_Node_Str","String_Node_Str",selectedItems.size());
      deleteText=I18n.tr("String_Node_Str");
    }
    Object[] options=new Object[]{removeText,deleteText,cancelText};
    int confirmation=FocusJOptionPane.showOptionDialog(null,message,title,JOptionPane.OK_CANCEL_OPTION,JOptionPane.QUESTION_MESSAGE,null,options,cancelText);
    if (confirmation < 0 || options[confirmation] == cancelText) {
      return;
    }
    if (options[confirmation] == deleteText) {
      DeleteAction.deleteSelectedItems(libraryManager,downloadListManager,selectedItems);
    }
 else     if (options[confirmation] == removeText) {
      RemoveFromLibraryAction.removeFromLibrary(libraryManager,selectedItems);
    }
  }
}