Add callbacks to be invoked on file events.
Add callbacks to be invoked on file events.
the callbacks to invoke
a handle to the callback.
Removes a callback that was added via addObserver
Removes a callback that was added via addObserver
The handle returned by addObserver
An object that monitors a file system. The interface is very similar to that provided by other libraries/frameworks, such as rxJava. When it detects changes in the file system, it will invoke a set of user specified callbacks. The Observable also allows the user to add and removes paths to monitor.
the generic type of Entry.value instances