Need xls_reader.java & log4j.

Hi Ashish,

GoodMorning

I'm Laxmi, recently i have subscribed Selenium videos. In Module 7 , I have walked through the videos, it has been referred to download poi.api from the original site, also xls_reader.java & log4j.
I'm working on iMac, Could you please guide me which poi.api i have download from the site and also could you please share xls_reader.java & log4j files.