A Company.com develop

题目

A Company.com developer chooses to avoid using SingleThreadModel but wants to ensure that data is updated in a thread-safe manner.  Which two can support this design goal?()

  • A、 Store the data in a local variable.
  • B、 Store the data in an instance variable.
  • C、 Store the data in the HttpSession object.
  • D、 Store the data in the ServletContext object.
  • E、 Store the data in the ServletRequest object.
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