I don't like this as I don't want Archive Utility associated with JAR files, nor do I have another application I'd rather associate. I tried this and had no change in Spotlight results, however I didn't try rebuilding my Spotlight index. View a JAR file in Finder, view info, select a different application under 'Open With', click 'Change All'. This can be done the standard way in Finder. Perhaps if we can remove that association then Spotlight will stop indexing JAR files as apps. I started by assuming Spotlight is inferring that JAR files are kind:application because JAR files are associated with Jar Launcher.app by default. Associate JAR files to some other application? I would like to do the same, but I think the answer is 'it's not possible' or at least 'it'd be risky to attempt'.
