Uses of Class jdk.jshell.JShell.Subscription (Java SE 9 & JDK 9 )

## Uses of Class
jdk.jshell.JShell.Subscription

- Packages that use JShell.Subscription
  Package | Description
  --- | ---
  jdk.jshell | Provides interfaces for creating tools, such as a Read-Eval-Print Loop (REPL), which interactively evaluate "snippets" of Java programming language code.

- - ### Uses of JShell.Subscription in jdk.jshell

    Methods in jdk.jshell that return JShell.Subscription
    Modifier and Type | Method | Description
    --- | --- | ---
    `JShell.Subscription` | JShell.`onShutdown​(Consumer<JShell> listener)` | Register a callback to be called when this JShell instance terminates.
    `JShell.Subscription` | JShell.`onSnippetEvent​(Consumer<SnippetEvent> listener)` | Register a callback to be called when the Status of a snippet changes.

    Methods in jdk.jshell with parameters of type JShell.Subscription
    Modifier and Type | Method | Description
    --- | --- | ---
    `void` | JShell.`unsubscribe​(JShell.Subscription token)` | Cancel a callback subscription.