Given the code fragment:

How can you apply DateConverterto the birthdayfield?

Which interface should you implement if you want to be alerted to the lifecycle events surrounding your task being executed by a ManagedExecutorService?

Your customer is managing a large sales team divided in two different geographies in the USA. They have the Est Coast sales team and the Central sales team. Both teams are handled by one manager and perform the same function.
Your customer wants to track the expenses of the two teams separately; however, they do not consider them different as they are handled by one manager only.
How will you fulfill the requirement?

Which interface should you implement if you want to be alerted to the lifecycle events surrounding your task being executed by a ManagedExecutorService?

Which type allows you to share servlet attributes across your entire web application?