If the JMS system detects a problem, it calls the listener's onException
method:
public class MyConsumer implements ExceptionListener, MessageListener {
private void init(){
Connection connection = ... //create connection
connection.setExceptionListener(this);
connection.start();
}
public void onException(JMSException e){
String errorCode = e.getErrorCode();
Exception ex = e.getLinkedException();
//clean up resources, or, attempt to reconnect
}
public void onMessage(Message m){
...
}
Not much to it, really, the above is standard practice for standalone consumers; it's not implementation-specific; actually, quite the contrary as it's part of the spec!, so all JMS-compliant providers will support it.