Thank you for the link. I got only four jars from different folders;
xmlbeans-2.6.0
poi-ooxml-schemas-3.13-20150929.jar
poi-ooxml-3.13-20150929.jar
poi-3.13-20150929.jar
I could not find dom4j instead I have log4j jar file. Please let me know where do i find the same
http://www.java2s.com/Code/Jar/d/Downloaddom4jjar.htm
this is very good website java2s.