Java TM Look and Feel Design Guidelines: Advanced Topics > Part II: Special Topics > 8: Events and Alarms > Alarm Conditions   Previous Next Contents/Index/Search


 

Alarm Conditions

To determine when an application should create alarm events, the application's designer or users define alarm condition s, which when true, cause the application to create alarm events. Applications constantly monitor whether each alarm condition is true.

Each alarm condition defines either:

  • A threshold on a monitored entity
  • Thresholds on a set of monitored entities

A threshold is a value beyond which the alarm condition is true--or can be true, if the alarm condition depends on more than one threshold.

When true, an alarm condition constitutes an alarm on each monitored entity that the condition affects. A monitored entity for which an alarm condition is true is called an alarmed entity .




Java Look and Feel Design Guidelines: Advanced Topics.
Copyright 2001. Sun Microsystems, Inc. All Rights Reserved.
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