Program: 148431
Project: 148431
Buggy source:
public void run(){
  try {
    super.run();
    IStructuredSelection selection=(IStructuredSelection)view.getViewer().getSelection();
    IWorkbenchPage page=view.getSite().getWorkbenchWindow().getActivePage();
    final ArrayList<TreeObject> toDelList=new ArrayList<TreeObject>();
    if (selection.isEmpty()) {
      return;
    }
 else {
      int size=selection.size();
      String s=new String();
      List<IEditorPart> opendViewer=new ArrayList<IEditorPart>();
      if (size > 1)       s="String_Node_Str";
 else       s="String_Node_Str";
      for (Iterator<TreeObject> iter=selection.iterator(); iter.hasNext(); ) {
        TreeObject xobject=iter.next();
        IEditorInput xobjectBrowserViewinput=new XObjectBrowserInput(xobject,xobject.getDisplayName());
        IEditorInput xobjectEditorinput=new XObjectEditorInput(xobject,xobject.getDisplayName());
        if (page.findEditor(xobjectBrowserViewinput) != null) {
          opendViewer.add(page.findEditor(xobjectBrowserViewinput));
        }
        if (page.findEditor(xobjectEditorinput) != null) {
          opendViewer.add(page.findEditor(xobjectEditorinput));
        }
        if ((!xobject.isXObject() && xobject.getType() != TreeObject.CATEGORY_FOLDER) || (xobject.getType() == TreeObject.CATEGORY_FOLDER && xobject.getDisplayName().equals("String_Node_Str")))         continue;
 else         if (xobject.getType() == TreeObject.CATEGORY_FOLDER && !xobject.getDisplayName().equals("String_Node_Str")) {
          TreeParent parent=(TreeParent)xobject;
          LocalTreeObjectRepository.getInstance().receiveAllOffsprings(parent,toDelList);
          toDelList.add(xobject);
        }
 else         if (!XSystemObjects.isExist(xobject.getType(),xobject.getDisplayName())) {
          toDelList.add(xobject);
        }
      }
      if (opendViewer.size() > 0) {
        for (        IEditorPart editorpart : opendViewer) {
          page.closeEditor(editorpart,false);
        }
      }
      if (toDelList.size() > 0) {
        if (!MessageDialog.openConfirm(this.view.getSite().getShell(),"String_Node_Str" + IConstants.TALEND + "String_Node_Str","String_Node_Str" + toDelList.size() + "String_Node_Str"+ s+ "String_Node_Str"))         return;
      }
    }
    UIJob job=new UIJob("String_Node_Str"){
      @Override public IStatus runInUIThread(      IProgressMonitor monitor){
        try {
          deleteTreeObject(toDelList);
          return Status.OK_STATUS;
        }
 catch (        Exception e) {
          e.printStackTrace();
          return Status.CANCEL_STATUS;
        }
      }
    }
;
    job.setPriority(Job.SHORT);
    job.schedule();
  }
 catch (  Exception e) {
    log.error(e.getMessage(),e);
    MessageDialog.openError(view.getSite().getShell(),"String_Node_Str","String_Node_Str" + IConstants.TALEND + "String_Node_Str"+ e.getLocalizedMessage());
  }
 finally {
  }
}

Fixed version (ground truth):
public void run(){
  try {
    super.run();
    IStructuredSelection selection=(IStructuredSelection)view.getViewer().getSelection();
    IWorkbenchPage page=view.getSite().getWorkbenchWindow().getActivePage();
    final ArrayList<TreeObject> toDelList=new ArrayList<TreeObject>();
    if (selection.isEmpty()) {
      return;
    }
 else {
      int size=selection.size();
      String s=new String();
      List<IEditorPart> opendViewer=new ArrayList<IEditorPart>();
      if (size > 1)       s="String_Node_Str";
 else       s="String_Node_Str";
      for (Iterator<TreeObject> iter=selection.iterator(); iter.hasNext(); ) {
        TreeObject xobject=iter.next();
        IEditorInput xobjectBrowserViewinput=new XObjectBrowserInput(xobject,xobject.getDisplayName());
        IEditorInput xobjectEditorinput=new XObjectEditorInput(xobject,xobject.getDisplayName());
        if (page.findEditor(xobjectBrowserViewinput) != null) {
          opendViewer.add(page.findEditor(xobjectBrowserViewinput));
        }
        if (page.findEditor(xobjectEditorinput) != null) {
          opendViewer.add(page.findEditor(xobjectEditorinput));
        }
        if ((!xobject.isXObject() && xobject.getType() != TreeObject.CATEGORY_FOLDER) || (xobject.getType() == TreeObject.CATEGORY_FOLDER && xobject.getDisplayName().equals("String_Node_Str")))         continue;
 else         if (xobject.getType() == TreeObject.CATEGORY_FOLDER && !xobject.getDisplayName().equals("String_Node_Str")) {
          TreeParent parent=(TreeParent)xobject;
          LocalTreeObjectRepository.getInstance().receiveAllOffsprings(parent,toDelList);
          toDelList.add(xobject);
        }
 else         if (!XSystemObjects.isExist(xobject.getType(),xobject.getDisplayName())) {
          toDelList.add(xobject);
        }
      }
      if (opendViewer.size() > 0) {
        for (        IEditorPart editorpart : opendViewer) {
          page.closeEditor(editorpart,false);
        }
      }
      if (toDelList.size() > 0) {
        if (!MessageDialog.openConfirm(this.view.getSite().getShell(),"String_Node_Str" + IConstants.TALEND + "String_Node_Str","String_Node_Str" + toDelList.size() + "String_Node_Str"+ s+ "String_Node_Str"))         return;
      }
    }
    UIJob job=new UIJob("String_Node_Str"){
      @Override public IStatus runInUIThread(      IProgressMonitor monitor){
        try {
          deleteTreeObject(toDelList);
          return Status.OK_STATUS;
        }
 catch (        Exception e) {
          log.error(e.getMessage(),e);
          return Status.CANCEL_STATUS;
        }
      }
    }
;
    job.setPriority(Job.SHORT);
    job.schedule();
  }
 catch (  Exception e) {
    log.error(e.getMessage(),e);
    MessageDialog.openError(view.getSite().getShell(),"String_Node_Str","String_Node_Str" + IConstants.TALEND + "String_Node_Str"+ e.getLocalizedMessage());
  }
 finally {
  }
}