| Interface | Description | 
|---|---|
| JMSInitialContextFactory | 
 In JMS, Topic/QueueConnectionFactories and Destinations (Topics and
 Queues) are obtained by resolving JNDI names. 
 | 
| MessageSink | 
 This is the interface that must be implemented by components in
 the patch bay configured as message sinks or message filters. 
 | 
| MessageSource | 
 This is the interface that must be implemented by components in
 the patch bay configured as message sources or message filters. 
 | 
| MessageSourceContext | 
 This is the interface that MessageSource implementations use to
 generate and send messages. 
 | 
| Class | Description | 
|---|---|
| EventSenderDroplet | 
 This droplet was created to allow the user to send an object message by passing it in as a
 parameter: eventobject. 
 |