Monitor a Folder using Java

gistfile1.java

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 App04 {

	public static void main(String[] args) throws IOException,
			InterruptedException {
		Path postFolder = Paths.get("D:\\test");
		WatchService watchService = FileSystems.getDefault().newWatchService();
		postFolder.register(watchService, StandardWatchEventKinds.ENTRY_CREATE, StandardWatchEventKinds.ENTRY_MODIFY, StandardWatchEventKinds.ENTRY_DELETE);

		boolean valid = true;

		do {
			WatchKey watchKey = watchService.take();

			for (WatchEvent<?> event : watchKey.pollEvents()) {
				if (StandardWatchEventKinds.ENTRY_CREATE.equals(event.kind())) {
					String fileName = event.context().toString();
					System.out.println("File Created: " + fileName);
				}

				if (StandardWatchEventKinds.ENTRY_MODIFY.equals(event.kind())) {
					String fileName = event.context().toString();
					System.out.println("File Modified: " + fileName);
				}

				if (StandardWatchEventKinds.ENTRY_DELETE.equals(event.kind())) {
					String fileName = event.context().toString();
					System.out.println("File Deleted: " + fileName);
				}

			}

			valid = watchKey.reset();

		} while (valid);
	}
}