code: public static Path[] getArchiveClassPaths(Configuration conf) {
      String classpath = conf.get("mapred.job.classpath.archives");
      if (classpath == null)
        return null;
      ArrayList list = Collections.list(new StringTokenizer(classpath, System
                                                            .getProperty("path.separator")));
      Path[] paths = new Path[list.size()];
      for (int i = 0; i < list.size(); i++) {
        paths[i] = new Path((String) list.get(i));
      }
      return paths;
    }
docs: Get the archive entries in classpath as an array of Path
  
  @param conf Configuration that contains the classpath setting