MyWatch.java Source code

Introduction

Here is the source code for MyWatch.java

Source

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.WatchEvent.Kind;
import java.nio.file.WatchKey;
import java.nio.file.WatchService;

class MyWatch {

    public void watchRNDir(Path path) throws IOException, InterruptedException {
        try (WatchService watchService = FileSystems.getDefault().newWatchService()) {
            path.register(watchService, StandardWatchEventKinds.ENTRY_CREATE, StandardWatchEventKinds.ENTRY_MODIFY,
                    StandardWatchEventKinds.ENTRY_DELETE);

            while (true) {
                // retrieve and remove the next watch key
                final WatchKey key = watchService.take();

                for (WatchEvent<?> watchEvent : key.pollEvents()) {
                    final Kind<?> kind = watchEvent.kind();
                    if (kind == StandardWatchEventKinds.OVERFLOW) {
                        continue;
                    }
                    final WatchEvent<Path> watchEventPath = (WatchEvent<Path>) watchEvent;
                    final Path filename = watchEventPath.context();
                    System.out.println(kind + " -> " + filename);
                }

                boolean valid = key.reset();

                if (!valid) {
                    break;
                }
            }
        }
    }
}

public class Main {

    public static void main(String[] args) {

        final Path path = Paths.get("C:/tutorial");
        MyWatch watch = new MyWatch();

        try {
            watch.watchRNDir(path);
        } catch (IOException | InterruptedException ex) {
            System.err.println(ex);
        }

    }
}