Join LiveJournal Selenium: Excel Read and Write using java Apache POI library FastExcel is a library for reading and writing Excel files in Java using the free xls format. NPOI: Data validation constraint approach for Date, Time , List Item , email etc. for XSSF(.xslx) excel file using c#; Simple Excel (XLSX) creation Apache POI - Read and Write Excel File in Java - HowToDoInJava Implement Excel File Exporter Class. Remarks #. In case you want to extract metadata from a Word document, make use of Apache Tika. Problem reading Excel 2007 file .xlsx file extention, while I am trying to read with apache poi: InputStream file = new FileInputStream(C:\\\\test.xlsx); ---> The point is that sometimes a dependent cell may get adjusted by a macro or a function and it may be that POI doesn't have the capabilities to do the same thing. This test verifies that we can rely on POI to retrieve the default value, based on the stored values of the sheet. JDK does not provide direct API to read or write Microsoft Excel or Word document. The below code explains how to read an Excel file using Apache POI libraries. 1)FastExcel. apache-poi Tutorial => NPOI: Data validation approach for... Exception in thread "main" org.apache.poi.poifs.filesystem.NotOLE2FileException: Invalid header signature; read 0x0000000000000000, expected 0xE11AB1A1E011CFD0 - Your file appears not to be a valid OLE2 document. To bind more than 256 characters one can follow explained approach. Excel File Owing to idiosyncrasies in the excel file format, if the result of calling this method is zero, you can't tell if that means there are zero rows on the sheet, or one at position zero. Create workbook instance from excel sheet Get to the desired sheet Increment row number iterate over all cells in a row repeat step 3 and 4 until all data is read Let’s see all the above steps in code.