java:openCSV不在递归循环中写入文件?

在我的主课上

  public static void main(String[] args) {
            CSVWriter writer = new CSVWriter(new FileWriter("D:\\myfilefile.csv"), '\t');
            recursiveLoop(writer, 10);
    }

public void function recursive(CSVWriter writer, int index){
if (index == 0){
  return;
}else{
  String[] entries ="TEST#LINE#".split("#");
  writer.writeNext(entries);
 index--;
 recursiveLoop(writer, index);
}

}

然而,每当我打开我的文件.csv,什么都没有写!我做错什么了?