Uses of Interface java.nio.file.WatchService (Java SE 12 & JDK 12 )

## Uses of Interface
java.nio.file.WatchService

- Packages that use WatchService
  Package | Description
  --- | ---
  java.nio.file | Defines interfaces and classes for the Java virtual machine to access files, file attributes, and file systems.

- - ### Uses of WatchService in java.nio.file

    Methods in java.nio.file that return WatchService
    Modifier and Type | Method | Description
    --- | --- | ---
    `abstract WatchService` | FileSystem.`newWatchService()` | Constructs a new `WatchService` (optional operation).

    Methods in java.nio.file with parameters of type WatchService
    Modifier and Type | Method | Description
    --- | --- | ---
    `default WatchKey` | Path.`register​(WatchService watcher, WatchEvent.Kind<?>... events)` | Registers the file located by this path with a watch service.
    `WatchKey` | Path.`register​(WatchService watcher, WatchEvent.Kind<?>[] events, WatchEvent.Modifier... modifiers)` | Registers the file located by this path with a watch service.
    `WatchKey` | Watchable.`register​(WatchService watcher, WatchEvent.Kind<?>... events)` | Registers an object with a watch service.
    `WatchKey` | Watchable.`register​(WatchService watcher, WatchEvent.Kind<?>[] events, WatchEvent.Modifier... modifiers)` | Registers an object with a watch service.