code: static void triggerUdevNotification(String sysClass) {
          File[] devices = new File("/sys/class/" + sysClass).listFiles();
          byte[] action = "change".getBytes();
          for (File device: devices) {
              File uevent = new File(device, "uevent");
              if (uevent.exists()) {
                  try {
                      write(uevent.getAbsolutePath(), action);
                  } catch (IOException e) {
                      System.err.println("Udev: Failed to write to " + uevent);
                      System.err.println("      Check that you have permission to access input devices");
                      if (!e.getMessage().contains("Permission denied")) {
                          e.printStackTrace();
                      }
                  }
              }
          }
      }
docs: Fires udev notification events for devices of the given type