Scheduler does not trigger in jira server plugin

I am new to the jira server plugin development. I am trying to create scheduler in the jira server. There is a problems I see here:

The atlas-run command builds and run the plugin successfully, but it doesn’t trigger the scheduler, and doesn’t print the line from the afterPropertiesSet() and runJob() method to the console
Please find the code at the following location for your review:

I need to learn from your experience, how to resolve this error. If this cannot be resolved, please point me to any working example for the jira server scheduler working for the latest version of the jira server.