FULL PRODUCT VERSION :
ava version "1.7.0"
ava(TM) SE Runtime Environment (build 1.7.0-b146)
ava HotSpot(TM) Client VM (build 21.0-b16, mixed mode, sharing)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows XP [Version 5.1.2600]

A DESCRIPTION OF THE PROBLEM :
I was trying to monitor a directory and its sub-directories for changes. When a sub-directory is created, I register it with the watcher. When a sub-directory renames, the path of WatchKey.Watchable() remains the old path name. When I try to register the new path with the watcher, the same instance of WatchKey as that of old path is returned. This time WatchKey.Watchable() still represents the old path name. This prevents me from registering watchers for sub-directories of the renamed directory.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
compile the attached source and run.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
D:\Workspace\FileMonitor\src\filemonftp>java FileMonitor
Populating file tree
Started monitoring directories
-------EVENT-------
TYPE :ENTRY_CREATE
PARENT :d:\inotify
ABSPATH :d:\inotify\New Folder
DIR? :true
WKEY :sun.nio.fs.WindowsWatchService$WindowsWatchKey@691177
-------EVENT-------
TYPE :ENTRY_DELETE
PARENT :d:\inotify
ABSPATH :d:\inotify\New Folder
DIR? :false
TYPE :ENTRY_CREATE
PARENT :d:\inotify
ABSPATH :d:\inotify\hello
DIR? :true
WKEY :sun.nio.fs.WindowsWatchService$WindowsWatchKey@691177
-------EVENT-------
TYPE :ENTRY_CREATE
PARENT :d:\inotify\hello
ABSPATH :d:\inotify\hello\New Folder
DIR? :true

ACTUAL -
D:\Workspace\FileMonitor\src\filemonftp>java FileMonitor
Populating file tree
Started monitoring directories
-------EVENT-------
TYPE :ENTRY_CREATE
PARENT :d:\inotify
ABSPATH :d:\inotify\New Folder
DIR? :true
WKEY :sun.nio.fs.WindowsWatchService$WindowsWatchKey@691177
-------EVENT-------
TYPE :ENTRY_DELETE
PARENT :d:\inotify
ABSPATH :d:\inotify\New Folder
DIR? :false
TYPE :ENTRY_CREATE
PARENT :d:\inotify
ABSPATH :d:\inotify\hello
DIR? :true
WKEY :sun.nio.fs.WindowsWatchService$WindowsWatchKey@691177
-------EVENT-------
TYPE :ENTRY_CREATE
PARENT :d:\inotify\New Folder
ABSPATH :d:\inotify\New Folder\New Folder
DIR? :false
java.nio.file.NoSuchFileException: d:\inotify\New Folder\New Folder
        at sun.nio.fs.WindowsException.translateToIOException(WindowsException.j
        at sun.nio.fs.WindowsException.asIOException(WindowsException.java:106)
        at sun.nio.fs.WindowsWatchService$Poller.implRegister(WindowsWatchServic
        at sun.nio.fs.AbstractPoller.processRequests(AbstractPoller.java:260)
        at sun.nio.fs.WindowsWatchService$Poller.run(WindowsWatchService.java:53
        at java.lang.Thread.run(Thread.java:722)

ERROR MESSAGES/STACK TRACES THAT OCCUR :
D:\Workspace\FileMonitor\src\filemonftp>java FileMonitor
Populating file tree
Started monitoring directories
-------EVENT-------
TYPE :ENTRY_CREATE
PARENT :d:\inotify
ABSPATH :d:\inotify\New Folder
DIR? :true
WKEY :sun.nio.fs.WindowsWatchService$WindowsWatchKey@691177
-------EVENT-------
TYPE :ENTRY_DELETE
PARENT :d:\inotify
ABSPATH :d:\inotify\New Folder
DIR? :false
TYPE :ENTRY_CREATE
PARENT :d:\inotify
ABSPATH :d:\inotify\hello
DIR? :true
WKEY :sun.nio.fs.WindowsWatchService$WindowsWatchKey@691177
-------EVENT-------
TYPE :ENTRY_CREATE
PARENT :d:\inotify\New Folder
ABSPATH :d:\inotify\New Folder\New Folder
DIR? :false
java.nio.file.NoSuchFileException: d:\inotify\New Folder\New Folder
        at sun.nio.fs.WindowsException.translateToIOException(WindowsException.j
        at sun.nio.fs.WindowsException.asIOException(WindowsException.java:106)
        at sun.nio.fs.WindowsWatchService$Poller.implRegister(WindowsWatchServic
        at sun.nio.fs.AbstractPoller.processRequests(AbstractPoller.java:260)
        at sun.nio.fs.WindowsWatchService$Poller.run(WindowsWatchService.java:53
        at java.lang.Thread.run(Thread.java:722)

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.io.File;
import java.io.IOException;
import java.nio.file.FileVisitResult;
import java.nio.file.Files;
import static java.nio.file.LinkOption.*;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.FileSystem;
import java.nio.file.FileSystems;
import java.nio.file.SimpleFileVisitor;

import static java.nio.file.StandardWatchEventKinds.*;
import java.nio.file.WatchEvent;
import java.nio.file.WatchKey;
import java.nio.file.WatchService;
class FileMonitor
{

private static WatchService getWatcher()
{
try{
return FileSystems.getDefault().newWatchService();
}
catch(IOException e)
{
e.printStackTrace();
return null;
}
}

public static void main(String[] args)
{
WatchKey key=null;
final WatchService watcher = getWatcher();
Path homedir=null;
try{



homedir = Paths.get("d:\\inotify");
System.out.println("Populating file tree");
key=homedir.register(watcher, ENTRY_CREATE, ENTRY_DELETE, ENTRY_MODIFY);
try{
Files.walkFileTree(homedir, new SimpleFileVisitor<Path>() {
@Override
public FileVisitResult postVisitDirectory(Path dir, IOException e)
throws IOException
{
if (e == null) {
if (Files.isDirectory(dir, NOFOLLOW_LINKS))
{

dir.register(watcher, ENTRY_CREATE, ENTRY_DELETE, ENTRY_MODIFY);
}

return FileVisitResult.CONTINUE;
} else {
// directory iteration failed
e.printStackTrace();
return FileVisitResult.CONTINUE;
}
}
});
}
catch (IOException e)
{
e.printStackTrace();
}


}
catch(Exception e)
{
e.printStackTrace();
}
System.out.println("Started monitoring directories");
try{
while (true){
try {
key = watcher.take();
} catch (InterruptedException x) {
return;
}

System.out.println("-------EVENT-------");
for(WatchEvent<?> we:key.pollEvents())
{

if (we.kind() == OVERFLOW) {
continue;
}

WatchEvent<Path> wep=(WatchEvent<Path>)we;
Path path=wep.context();
Path parent=(Path)key.watchable();
Path absolute=parent.resolve(path);
System.out.println("TYPE :"+we.kind().toString());
System.out.println("PARENT :"+parent);
System.out.println("ABSPATH :"+absolute);
if (we.kind() == ENTRY_CREATE)
{
System.out.println("DIR? :"+Files.isDirectory(absolute, NOFOLLOW_LINKS));

//if (Files.isDirectory(absolute, NOFOLLOW_LINKS))
{
WatchKey wk=absolute.register(watcher, ENTRY_CREATE, ENTRY_DELETE, ENTRY_MODIFY);
System.out.println("WKEY :"+wk);
}
}
if (we.kind() == ENTRY_DELETE)
{
System.out.println("DIR? :"+Files.isDirectory(absolute, NOFOLLOW_LINKS));

//if (Files.isDirectory(absolute, NOFOLLOW_LINKS))
/*{
System.out.println("unregistering for: "+absolute);
WatchKey wk=absolute.register(watcher, ENTRY_CREATE, ENTRY_DELETE, ENTRY_MODIFY);
wk.cancel();
}*/
}

}
boolean valid = key.reset();
if (((Path)key.watchable()).equals(homedir) && !valid) {
break;
}
else if (!valid)
{
System.out.println("unregistering for: "+((Path)key.watchable()));
key.cancel();
}

}
}
catch (IOException e)
{
e.printStackTrace();
}

}
}
---------- END SOURCE ----------