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29.9. Annotations for asynchronicity

The following annotations are used to declare an asynchronous method, as in the following example: 
@Asynchronous public void scheduleAlert(Alert alert, 
                                        @Expiration Date date) { 
  ... 
}
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@Asynchronous public Timer scheduleAlerts(Alert alert, 
                                          @Expiration Date date, 
                                          @IntervalDuration long interval) { 
  ... 
}
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@Asynchronous 
@Asynchronous
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Specifies that the method call is processed asynchronously.
@Duration 
@Duration
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Specifies the parameter of the asynchronous call that relates to the duration before the call is processed (or first processed, for recurring calls).
@Expiration 
@Expiration
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Specifies the parameter of the asynchronous call that relates to the date and time at which the call is processed (or first processed, for recurring calls).
@IntervalDuration 
@IntervalDuration
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Specifies that an asynchronous method call recurs. The associated parameter defines the duration of the interval between recurrences.
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