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<h3 class="sectionHead"><span class="titlemark">6 </span> <a
id="x22-190006"></a>DBusSigHandler</h3>
<!--l. 440--><p class="noindent" >To handle incoming signals from other programs on the Bus you must register a signal handler. This must implement
<span
class="cmtt-12">DBusSigHandler</span><span class="footnote-mark"><a
href="dbus-java23.html#fn13x0"><sup class="textsuperscript">13</sup></a></span><a
id="x22-19001f13"></a>
and provide an implementation for the handle method. An example Signal Handler is in
figure <a
href="#x22-190029">9<!--tex4ht:ref: fig:handler --></a>. Signal handlers should be parameterised with the signal they are handling. If you
want a signal handler to handle multiple signals you can leave out the parameterisation and use
<span
class="cmtt-12">instanceof </span>to check the type of signal you are handling. Signal handlers will be run in their
own thread.
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import org.freedesktop.dbus.DBusSignal;
 <br />import org.freedesktop.dbus.DBusSigHandler;
 <br />
 <br />public class Handler extends DBusSigHandler<DBus.NameAcquired>
 <br />{
 <br />   public void handle(DBus.NameAcquired sig)
 <br />   {
 <br />         ...
 <br />   }
 <br />}
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<!--l. 463--><p class="nopar" ></p></div>
<br /> <div class="caption"
><span class="id">Figure 9: </span><span
class="content">A Signal Handler</span></div><!--tex4ht:label?: x22-190029 -->
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