Welcome to Apache POI Tutorial. Sometimes we need to read data from Microsoft Excel Files or we need to generate reports in Excel format. The below code shows how to write a simple Excel file using Apache POI libraries. The code uses a 2 dimensional data array to hold the data. In this video, I will demo how to Write Excel File in Java with Apache POI You can see programming. June 19, by Lokesh Gupta. We want to read the excel file and create the list of Countries. I am gettign error fed cup romania live. October 27, at 9: Then set sheets, rows and cells values and use FileOutputStream to write it to file. But, I am completely struck at the step of handling xssf file. Can any one please tell me how can we do that?