Give the code fragment:

And the code fragment:

The sendConfirmation()and reserve()methods should be executed in the same transactional context.
Which transaction attributes do you ensure this?

Given:

What will be the response to a HEADrequest?

You have been assigned to the Widget Editor portion of an application. It contains a Widget Editor Facelet page, the Widget class, and a simple WidgetEditor backing bean, which contains a reference to the current Widget instance.
Given the code fragment from the Widget class:

Given the code fragment from the Facelet page:

The page displays Conversion Error when a user fills out all the form fields and clicks the Save button.
Which step do you perform to fix this problem?

In the Back-to-Back (B2B) Order to Cash flow, ordered items are purchased from a supplier. The Sourcing Rules have been defined for the item and the buy flow has been initiated. The sales order line is shown as Awaiting Shipping and the supply line status is in "Purchasing" with the supply order generated but the purchase requisition not generating.
What is the reason?

Which class do you use to handle an incoming JSON Message as a stream?