Topic in activemq

??????o.-- Wed, 07 Apr 2021 03:30:13 -0700

hello:
&nbsp;i want to know something about topic
&nbsp;Do you have to subscribe in advance when using topic to accept 
messages?&nbsp;
After the producer sends a message and starts the consumer to connect to topic, 
will the consumer receive the message
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&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; thanks

Topic in activemq

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