#vulnerable code 
                              public static byte[] getFileAttributes(File file) {
    try {
      if (file == null || (!Files.isSymbolicLink(file.toPath()) && !file.exists())) {
        return new byte[4];
      }

      Path path = file.toPath();

      String os = System.getProperty("os.name").toLowerCase();
      if (isWindows(os)) {
        return getWindowsFileAttributes(path);
      } else if (isMac(os) || isUnix(os)) {
        return getPosixFileAttributes(path);
      } else {
        return new byte[4];
      }
    } catch (NoSuchMethodError e) {
      return new byte[4];
    }
  } 
                            #location 9 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                              public static byte[] getFileAttributes(File file) {
    try {
      if (file == null || (!Files.isSymbolicLink(file.toPath()) && !file.exists())) {
        return new byte[4];
      }

      Path path = file.toPath();

      if (isWindows()) {
        return getWindowsFileAttributes(path);
      } else if (isMac() || isUnix()) {
        return getPosixFileAttributes(path);
      } else {
        return new byte[4];
      }
    } catch (NoSuchMethodError e) {
      return new byte[4];
    }
  }