I'm writing a plugin for a software in eclipse. I'm using vtd-xml.jar for importing an xml file. I have added to the build path by rigt clicking on the paroject and selecting the opetion add to build path. While I do the operations from eclipse it is working fine but when I make a jar file and install it in the software then I'm getting an exception with vtd-xml.jar as class not found. Is there something that I have to do while making a jar file when installed in main software?