How to get the path of executed .jar file?

Question

How do I get the path of a an executed .jar file, in Java?

I tried using System.getProperty("user.dir"); but this only gave me the current working directory which is wrong, I need the path to the directory, that the .jar file is located in, directly, not the "pwd".

Answer 1

Taken From Java-Forumns:

        public static String getPathToJarfileDir(Object classToUse) {
        String url = classToUse.getClass().getResource("/" + classToUse.getClass().getName().replaceAll("\\.", "/") + ".class").toString();
        url = url.substring(4).replaceFirst("/[^/]+\\.jar!.*$", "/");
        try {
            File dir = new File(new URL(url).toURI());
            url = dir.getAbsolutePath();
        } catch (MalformedURLException mue) {
            url = null;
        } catch (URISyntaxException ue) {
            url = null;
        }
        return url;
      }

Answer 2

Perhaps java.class.path property?

If you know the name of your jar file, and if it is in the class path, you can find its path there, eg. with a little regex.