I have 498 text files resulting from WebScraping results from a form on a website, and i want to convert it all to Excel standard (.xls) format using java.

I will have to do this conversion every month with the same amount of files, taking no less than 10 seconds per file on a hand-based conversion, summing a full 1h23m of inconvenience at best of optimism, so the method of loading each file and hitting "save\_as", by hand or by robot, is forbidden.