Exam Objective: 6.1 Given a design scenario, determine which collection classes and/or interfaces should be used to properly implement that design, including the use of the Comparable interface.

Which collection would you use if you were working with an e-commerce application that needs to maintain and search shopping cart items, stored as instances of a class 'ShoppingCartItem'. You should be able to identify a shopping cart item by its unique alphanumeric serial number.

• A) List
• B) ArrayList
• C) Map
• D) HashSet
• E) Arrays
• F) LinkedList
• G) Sets

Answer to Q3

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