Core Java · interview question
Which Java collection would you use if you need to store a list of product IDs that allows duplicates and maintains insertion order?
Multiple choiceEasychapter-4-curatedpremiumcore-javacode-reading-with-collections
Answer and explanation
Correct answer
C. ArrayList
Why
ArrayList maintains the order of insertion and allows duplicate elements, making it suitable for storing a list of product IDs where duplicates are allowed.
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