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Apache ActiveMQ &#8482; -- Life Cycle
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<a href="features.html">Features</a>&nbsp;&gt;&nbsp;<a href="activemq-real-time.html">ActiveMQ Real Time</a>&nbsp;&gt;&nbsp;<a href="life-cycle.html">Life Cycle</a>
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<div class="wiki-content maincontent"><h2 id="LifeCycle-LifecycleofChannels">Life cycle of Channels</h2>
<p>Blaze Channels are in one of five states:</p>
<h3 id="LifeCycle-Constructed-theChannelisn'tinitializedorhasbeenshutDown">Constructed - the Channel isn't initialized or has been shutDown</h3>
<h3 id="LifeCycle-initialized-">initialized - </h3>
<p> you can explicitly initialize a Channel by invoking its init() method. At this point its Configuration is set</p>
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BlazeChannelFactory factory = new BlazeChannelFactory();
BlazeChannel channel = factory.createChannel();
channel.init();
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<h3 id="LifeCycle-started-">started - </h3>
<p> this will implicitly initialize the channel and start the Channel's underlying communication with its peers:</p>
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BlazeChannelFactory factory = new BlazeChannelFactory();
BlazeChannel channel = factory.createChannel();
channel.start();
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<h3 id="LifeCycle-stopped-">stopped - </h3>
<p> this will stop communication - however you are able to re-start the channel at a latter point</p>
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BlazeChannelFactory factory = new BlazeChannelFactory();
BlazeChannel channel = factory.createChannel();
channel.stop();
// do something else
...
//re-start
channel.start();
</pre>
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<h3 id="LifeCycle-shutdown">shut down</h3>
<ul class="alternate"><li>this will implicitly call stop() - and de-construct the channel. It is possible to re-initialize the channel again - and it is recommend that to apply configuration changes to the channel - it be shut down and re-started - e.g.</li></ul>
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BlazeChannelFactory factory = new BlazeChannelFactory();
BlazeChannel channel = factory.createChannel();
channel.shutDown();
// change the congiguration
channel.getConfiguration().setBroadcastURI("tcp://localhost:60661");
//re-start
channel.start();
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