Apache POI, using both XSSF and HSSF

Question

I have a problem with Apache POI project.

I failed to use XSSF and HSSF in the \"Same Java Class\". Which jar should I dow

Answer 1

This worked for me:

    filePath = "C:\Users\user1\workspace\myproject\Excel.xlsx"
    String extension = FilenameUtils.getExtension(filePath);
    System.out.println(extension);