help you fix your problem Versioned jar-files are always a good idea The version is immediately visible & you can easily spot conflicts. I can't see any substantial* con. No, name of jar-files matters only if you have conflicting class files in two or more jar-files**. *: E.g., insignificat cons, such as executable jars might be easier to type without version numbering
what are the pros & cons of Git and Hg Version Control System?