Can GenericDialog addHelp method open a JavaDocs file from a plugin's jar file?

The title pretty much summarizes my question. The jar file contains javadocs that I want to load when the user clicks the dialog’s help button. I can unzip the jar and it works fine, but I want to avoid the unarchiving step to keep all of the plugin’s components together. I’ve looked around but haven’t yet found a solution. I’m hoping one of the experts here may have a suggestion.
Many Thanks