XLSX via Java에서 주석 추가 또는 삭제

// Instantiating a Workbook object
Workbook workbook = new Workbook(dataDir + "ThreadedCommentsSample.xlsx");

//Access first worksheet
Worksheet worksheet = workbook.getWorksheets().get(0);

CommentCollection comments = worksheet.getComments();
ThreadedCommentCollection threadedComments = worksheet.getComments().getThreadedComments("I4");
ThreadedCommentAuthor author = threadedComments.get(0).getAuthor();
      
comments.removeAt("I4");
      
ThreadedCommentAuthorCollection authors = workbook.getWorksheets().getThreadedCommentAuthors();

authors.removeAt(authors.indexOf(author));
workbook.save(dataDir + "ThreadedCommentsSample_Out.xlsx");