Java 7 WatchService - Ignoring multiple occurrences of the same event

Question

The javadoc for StandardWatchEventKinds.ENTRY_MODIFY says:

Directory entry modified. When a directory is registered for this event the

Answer 1

Are you sure there is problem with jdk7? It gives correct result for me (jdk7u15, windows)

Code

import java.io.IOException;
import java.nio.file.*;

public class WatchTest {

    public void watchMyFiles() throws IOException, InterruptedException {
        Path path = Paths.get("c:/temp");
        WatchService watchService = path.getFileSystem().newWatchService();
        path.register(watchService, StandardWatchEventKinds.ENTRY_MODIFY);

        while (true) {
            WatchKey watchKey = watchService.take(); // blocks

            for (WatchEvent event : watchKey.pollEvents()) {
                WatchEvent watchEvent = (WatchEvent) event;
                WatchEvent.Kind kind = watchEvent.kind();

                System.out.println(watchEvent.context() + ", count: " +
                        watchEvent.count() + ", event: " + watchEvent.kind());
                // prints (loop on the while twice)
                // servers.cfg, count: 1, event: ENTRY_MODIFY
                // servers.cfg, count: 1, event: ENTRY_MODIFY

                switch (kind.name()) {
                    case "ENTRY_MODIFY":
                        handleModify(watchEvent.context()); // reload configuration class
                        break;
                    case "ENTRY_DELETE":
                        handleDelete(watchEvent.context()); // do something else
                        break;
                    default:
                        System.out.println("Event not expected " + event.kind().name());
                }
            }

            watchKey.reset();
        }
    }

    private void handleDelete(Path context) {
        System.out.println("handleDelete  " + context.getFileName());
    }

    private void handleModify(Path context) {
        System.out.println("handleModify " + context.getFileName());
    }

    public static void main(String[] args) throws IOException, InterruptedException {
        new WatchTest().watchMyFiles();
    }
}

Output is like below- when file is copied over or edited using notepad.

config.xml, count: 1, event: ENTRY_MODIFY
handleModify config.xml

Vi uses many additional files, and seems to update file attribute multiple times. notepad++ does exactly two times.