register watch service java
Path path = Paths.get(".");
WatchService watchService = path.getFileSystem().newWatchService();
path.register(watchService, StandardWatchEventKinds.ENTRY_MODIFY);
WatchKey watchKey = null;
while (true) {
watchKey = watchService.poll(10, TimeUnit.MINUTES);
if(watchKey != null) {
watchKey.pollEvents().stream().forEach(event -> System.out.println(event.context()));
}
watchKey.reset();
}