package com.zetcode;

import java.io.IOException;

import java.nio.file.FileSystems;

import java.nio.file.Path;

import java.nio.file.Paths;

import java.nio.file.StandardWatchEventKinds;

import java.nio.file.WatchEvent;

import java.nio.file.WatchKey;

import java.nio.file.WatchService;

public class DirWatcherEx {

public static void main(String[] args) throws IOException {

var watchDir = "C:/Users/Jano/tmp/";

Path filePath = Paths.get(watchDir);

try (WatchService watchService = FileSystems.getDefault().newWatchService()) {

// listen for create, delete and modify event kinds

filePath.register(watchService, StandardWatchEventKinds.ENTRY_CREATE,

StandardWatchEventKinds.ENTRY_DELETE,

StandardWatchEventKinds.ENTRY_MODIFY);

while (true) {

WatchKey key;

try {

// the calling thread blocks until a key is signalled

key = watchService.take();

} catch (InterruptedException x) {

return;

}

// retrieve all the accumulated events

for (WatchEvent<?> event : key.pollEvents()) {

WatchEvent.Kind<?> kind = event.kind();

System.out.printf("Event: %s ", kind.name());

Path path = (Path) event.context();

System.out.printf("Path: %s %n", path.toString());

}

// resetting the key goes back to ready state

key.reset();

}

}

}

}