java.lang.NoClassDefFoundError while creating a .xlsx file using Apache POI

Question

I am trying to create a .xlsx file using Apache POI. This is my code:

FileOutputStream outputStream1=null;
XSSFWorkbook workbook = new XSSFWorkbook();
XSSFSheet          


        

Answer 1

I also think you do not import the poi-3.7.jar into your project! first, you should create a folder lib, then copy the jar package file to this lib,then switch to build path, you can google it.