Concurrency Utilities for Java EE - ManagedExecutor Samples
        
        Get ManagedExecutor using (@Resource) (in Servlet)
        Get ManagedExecutor using (JNDI Context) (in Servlet)
        Submit tasks from  EJB
        Submit tasks using invokeAll
        Submit tasks using invokeAny
        Submit tasks with ManagedTaskListener
        Run task with a UserTransaction