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How to set up an EventListener on an event from another plugin? Edited

I've been trying to set up an EventListener using an AnswerCreatedEvent from the com.atlassian.confluence.plugins.questions package. The class I set up works for core Confluence events, but when I change it to a Questions event, it says it is missing dependencies when I try to upload it and cannot be enabled.

public class SampleEventListener implements DisposableBean, InitializingBean {

private EventPublisher eventPublisher;

public SampleEventListener(
final EventPublisher eventPublisher
) {
this.eventPublisher = eventPublisher;

* Called when the plugin has been enabled.
* @throws Exception
public void afterPropertiesSet() throws Exception {
// Register ourselves with the EventPublisher
Utils.log("Listener Initialized.");

// Unregister the listener if the plugin is uninstalled or disabled.
public void destroy() throws Exception {
Utils.log("Listener Un-initialized.");

public void answerCreatedEvent(final AnswerCreatedEvent event) {
System.out.println("Answer was created!");


Here's part of my pom.xml:



This is the log I'm getting when attemping to upload the plugin.

Caused by: java.lang.IllegalStateException: Failed to introspect Class [] from ClassLoader [ [305]]
Caused by: java.lang.NoClassDefFoundError: com/atlassian/confluence/plugins/questions/event/AnswerCreatedEvent


One other thing to mention is that I did find this article regarding a similar error I was having:

I checked the Felix web console as it suggests and was not able to find the questions package being exported.


Any help would be greatly appreciated. 

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