Apachi POI reading xssf workbook ending with no exception and not reading file

Question

I am new to Apache POI. I am trying to reading xlsx file using xssf workbook. Its not reading some files and not throwing exception, its directly going to finally block. How to find out the exact root cause. Here's the line am using. Thanks in advance.

FileInputStream inputStream = new FileInputStream(file);

    try {
                Iterator<org.apache.poi.ss.usermodel.Row> rowIterator = null;


                    org.apache.poi.xssf.usermodel.XSSFWorkbook xlsxbook = new org.apache.poi.xssf.usermodel.XSSFWorkbook(inputStream);
                    sheet = xlsxbook.getSheetAt(0);
    }
    catch (Exception e) {
                logger.log(Level.WARNING, "", e);
            } finally {
                try {
                    if (inputStream != null) {
                        inputStream.close();
                    }
                } catch (Exception ioe) {
                    System.out.println(ioe);
                }
            }

Answer 1

Its hard to be certain from so little code, but "directly going to finally block" sounds a lot like throwing an exception. If you add the below code before the finally block, does anything get printed?

catch (Throwable t){
   t.printStackTrace();
}