code: public static Set<String> scanClassPath(final String classPath, final Set<String> excludeJarSet) {
          final Set<String> pathSet = new HashSet<String>();
          // Defer to JDKPaths to do the actual classpath scanning.
          __JDKPaths.processClassPathItem(classPath, excludeJarSet, pathSet);
          return pathSet;
      }
docs: Scan the classpath string provided, and collect a set of package paths found in jars and classes on the path.
  
  @param classPath the classpath string
  @param excludeJarSet a set of jars to exclude from scanning
  @return the results of the scan, as a set of package paths (separated by '/').