javax.ejb

## Annotation Type Asynchronous

-     @Target(value={METHOD,TYPE})
      @Retention(value=RUNTIME)
      public @interface Asynchronous

  Used to mark a session bean method as an asynchronous method or to designate all business methods of a session bean class as asynchronous.

  An asychronous method must have return type `void` or `Future<V>`, where `V` is the result value type.

  Asynchronous method invocation semantics only apply to the no-interface, local business, and remote business client views. Methods exposed through the EJB 2.x local, EJB 2.x remote, and web service client views must not be designated as asynchronous.

  Since:
    EJB 3.1
  See Also:
    `AsyncResult`

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